backport fix(diagnostic): status() respects config.signs (#39601)

Problem:
`diagnostic.status` only follows the `config.status.format` setting to determine how to display diagnostic signs. However, `signs` can actually also be configured via `config.signs.text`.

Solution:
If the user has set symbols via `config.status.format`, let that determine the content of `signs`; otherwise, use `config.signs.text` for display.

TODO: drop support `type(config.status.format) == 'table'`; users should just configure `config.signs.text` directly.

Co-authored-by: Yi Ming <ofseed@foxmail.com>

.github/workflows/codeql.yml

@@ -31,11 +31,11 @@ jobs:
     - uses: ./.github/actions/setup
 
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v4.35.1
+      uses: github/codeql-action/init@v4.35.2
       with:
         languages: cpp
 
     - run: make
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v4.35.1
+      uses: github/codeql-action/analyze@v4.35.2