Fix docs in Firefox and Firefox-based browsers

[linear]

Currently the docs' style is entirely broken and the browser console shows these warnings and errors:

Content-Security-Policy warnings 2
Content-Security-Policy: Couldn’t parse invalid host 'self', index.html
Content-Security-Policy: Ignoring unknown option 'none' index.html
Loading failed for the <script> with source “https://docs.hirundo.io/v0.2.3.post2/_static/documentation_options.js?v=24ab7dbd”. index.html:570:65
Content-Security-Policy: The page’s settings blocked a style (style-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/pygments.css?v=d111a655 from being applied because it violates the following directive: “default-src https://frame-ancestors” index.html
Content-Security-Policy: The page’s settings blocked a style (style-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/styles/furo.css?v=7bdb33bb from being applied because it violates the following directive: “default-src https://frame-ancestors” index.html
Content-Security-Policy: The page’s settings blocked a style (style-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/autodoc_pydantic.css from being applied because it violates the following directive: “default-src https://frame-ancestors” index.html
Content-Security-Policy: The page’s settings blocked a style (style-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/styles/furo-extensions.css?v=8dab3a3b from being applied because it violates the following directive: “default-src https://frame-ancestors” index.html
Content-Security-Policy: The page’s settings blocked an inline style (style-src-elem) from being applied because it violates the following directive: “default-src https://frame-ancestors”. Consider using a hash ('sha256-XWNpikcIxBYLwa+33Jaxv/CNbA81IPMijMNljM4Yapo=', requires 'unsafe-hashes' for style attributes) or a nonce. index.html:19:1
Content-Security-Policy: The page’s settings blocked an inline script (script-src-elem) from being executed because it violates the following directive: “default-src https://frame-ancestors”. Consider using a hash ('sha256-ySvT2PEZeueHGC1y2crNuNTfphBynFPP7i+U21fEgX0=') or a nonce. index.html:42:13
Content-Security-Policy: The page’s settings blocked an inline style (style-src-attr) from being applied because it violates the following directive: “default-src https://frame-ancestors”. Consider using a hash ('sha256-biLFinpqYMtWHmXfkA1BPeCY0/fNt46SAZ+BBk5YUog=', requires 'unsafe-hashes' for style attributes) or a nonce.
Source: display: none; index.html
Content-Security-Policy: The page’s settings blocked an inline style (style-src-attr) from being applied because it violates the following directive: “default-src https://frame-ancestors”. Consider using a hash ('sha256-83NYGez0F0LlY/TNwRZh3Un4QbaPeFy2ne6VkVku4a4=', requires 'unsafe-hashes' for style attributes) or a nonce.
Source: opacity: 50% 10 index.html
Content-Security-Policy: The page’s settings blocked a script (script-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/documentation_options.js?v=24ab7dbd from being executed because it violates the following directive: “default-src https://frame-ancestors” index.html
Content-Security-Policy: The page’s settings blocked the loading of a resource (img-src) at https://docs.hirundo.io/v0.2.3.post2/_static/favicon.png because it violates the following directive: “default-src https://frame-ancestors” FaviconLoader.sys.mjs:175:20
Content-Security-Policy: The page’s settings blocked an inline style (style-src-attr) from being applied because it violates the following directive: “default-src https://frame-ancestors”. Consider using a hash ('sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=', requires 'unsafe-hashes' for style attributes) or a nonce. 20 index.html
Loading failed for the <script> with source “https://docs.hirundo.io/v0.2.3.post2/_static/doctools.js?v=9bcbadda”. index.html:571:50
Content-Security-Policy: The page’s settings blocked a script (script-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/doctools.js?v=9bcbadda from being executed because it violates the following directive: “default-src https://frame-ancestors” index.html
Loading failed for the <script> with source “https://docs.hirundo.io/v0.2.3.post2/_static/sphinx_highlight.js?v=dc90522c”. index.html:572:58
Content-Security-Policy: The page’s settings blocked a script (script-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/sphinx_highlight.js?v=dc90522c from being executed because it violates the following directive: “default-src https://frame-ancestors” index.html
Loading failed for the <script> with source “https://docs.hirundo.io/v0.2.3.post2/_static/scripts/furo.js?v=46bd48cc”. index.html:573:54
Content-Security-Policy: The page’s settings blocked a script (script-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/scripts/furo.js?v=46bd48cc from being executed because it violates the following directive: “default-src https://frame-ancestors” index.html
Loading failed for the <script> with source “https://docs.hirundo.io/v0.2.3.post2/_static/open-sidebar.js?v=e2edcc48”. index.html:574:54
Content-Security-Policy: The page’s settings blocked a script (script-src-elem) at https://docs.hirundo.io/v0.2.3.post2/_static/open-sidebar.js?v=e2edcc48 from being executed because it violates the following directive: “default-src https://frame-ancestors” index.html
Content-Security-Policy: The page’s settings blocked the loading of a resource (default-src) at https://docs.hirundo.io/v0.2.3.post2/modules.html because it violates the following directive: “default-src https://frame-ancestors” index.html

Please fix