RDKB-64910 Improve cci process memory

[pavithrasundaravadivel]

Impacted Platforms:
TCXB7, TCXB8
Reason for change: To fix the memory leaks and remove residual files

Test Procedure: Run cci tests and look for leak/residual files

Risks: None

Priority: P1

Signed-off-by:Pavithra_Sundaravadivel@comcast.com

[Copilot]

Pull request overview

This PR targets CCI process memory/residual-file cleanup on TCXB7/TCXB8 by tightening config parsing and fixing missing frees/cleanup paths.

Changes:

• Treat empty "ConnectionType" as “not provided” during STA management config decode.
• Free heap allocations on previously leaking/error paths (res_file, if_map).
• Add /tmp/cci_res cleanup on certain thread exit paths.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/tests/wlan_emu_test_param_sta_management.cpp	Reject empty ConnectionType string to fall back to default selection logic.
src/tests/wlan_emu_test_param_gateway_performance.cpp	Free res_file after successful upload to avoid per-iteration leak.
src/messages/wlan_emu_msg_hdlr.cpp	Add /tmp/cci_res cleanup when the message handler thread exits.
src/gateway_cci/wlan_emu.cpp	Free if_map when external station manager init fails.
src/external_agent_cci/wlan_ext_emu_tests.cpp	Attempt to add /tmp/cci_res cleanup on abort path (currently unreachable).

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