CI: filter all .[ch] files before doing typo checks

The filter only leaves comments and strings in all files using .c or .h
extensions.

It is important that the filter runs after all the other checks are done
on these files as this process destroys the files.

Fixes #22508
Closes #22509

.github/workflows/checksrc.yml

@@ -66,20 +66,6 @@ jobs:
           source ~/venv/bin/activate
           reuse lint
 
-      - name: 'codespell'
-        run: |
-          source ~/venv/bin/activate
-          codespell --version
-          .github/scripts/codespell.sh
-
-      - name: 'typos'
-        timeout-minutes: 2
-        run: |
-          /home/linuxbrew/.linuxbrew/bin/brew install typos-cli
-          eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
-          typos --version
-          .github/scripts/typos.sh
-
       - name: 'cmakelint'
         run: |
           source ~/venv/bin/activate
@@ -96,6 +82,24 @@ jobs:
           source ~/venv/bin/activate
           scripts/pythonlint.sh
 
+      - name: filter off code from all C and H files
+        run: |
+          git ls-files -z '**.[ch]' | xargs -0 -r -n1 ./.github/scripts/c-strip
+
+      - name: 'codespell'
+        run: |
+          source ~/venv/bin/activate
+          codespell --version
+          .github/scripts/codespell.sh
+
+      - name: 'typos'
+        timeout-minutes: 2
+        run: |
+          /home/linuxbrew/.linuxbrew/bin/brew install typos-cli
+          eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
+          typos --version
+          .github/scripts/typos.sh
+
   pytype:
     name: 'pytype'
     runs-on: ubuntu-24.04-arm  # pytype is discontinued and requires python 3.8-3.12