Don't escape tab characters when saving source members

[SamJessep]

Changes

This change seems to fix the issue mentioned here #3060

Here is my example of a program where the tab character was added just before dsply then ran crtbndpgm

With the change I can save the source file with tabs and compile it fine & the existing tests still pass.

Maybe I'm missing the reason why tab escaping was needed?

How to test this PR

1. Create a rpgle program with ccsid 37
2. Add a tab character via vs code (change editor settings to use tabs over spaces)
3. Save and compile
4. Program compiles without errors

Checklist

• have tested my change
• have created one or more test cases
• Remove any/all console.logs I added

[chrjorgensen]

@SamJessep Thank you for the PR - but please see my comment here on why this should not be implemented. Sorry.