Fix workflow_dispatch matrix filter syntax

Remove explicit expression syntax from job-level if condition.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: StuartCameronCode

.github/workflows/build-deps-linux.yml

@@ -37,7 +37,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}
 
-    if: ${{ inputs.arch == 'both' || inputs.arch == matrix.arch }}
+    if: inputs.arch == 'both' || inputs.arch == matrix.arch
 
     steps:
       - name: Checkout repository