Fix Go custom tracing tests

These were supplying CODEQL_EXTRACTOR_GO_BUILD_TRACING=true rather than
CODEQL_EXTRACTOR_GO_BUILD_TRACING=on,
therefore tracing wasn't being tested.

.github/workflows/__go-custom-tracing-autobuild.yml

@@ -81,5 +81,5 @@ jobs:
           exit 1
         fi
     env:
-      CODEQL_EXTRACTOR_GO_BUILD_TRACING: 'true'
+      CODEQL_EXTRACTOR_GO_BUILD_TRACING: on
       INTERNAL_CODEQL_ACTION_DEBUG_LOC: true

.github/workflows/__go-custom-tracing.yml

@@ -92,5 +92,5 @@ jobs:
       env:
         TEST_MODE: true
     env:
-      CODEQL_EXTRACTOR_GO_BUILD_TRACING: 'true'
+      CODEQL_EXTRACTOR_GO_BUILD_TRACING: on
       INTERNAL_CODEQL_ACTION_DEBUG_LOC: true

pr-checks/checks/go-custom-tracing-autobuild.yml

@@ -2,7 +2,7 @@ name: "Go: Autobuild custom tracing"
 description: "Checks that Go tracing works in conjunction with the autobuilder"
 os: ["ubuntu-latest", "macos-latest"]
 env:
-  CODEQL_EXTRACTOR_GO_BUILD_TRACING: "true"
+  CODEQL_EXTRACTOR_GO_BUILD_TRACING: "on"
 steps:
   - uses: actions/setup-go@v3
     with:

pr-checks/checks/go-custom-tracing.yml

@@ -1,7 +1,7 @@
 name: "Go: Custom tracing"
 description: "Checks that Go tracing works"
 env:
-  CODEQL_EXTRACTOR_GO_BUILD_TRACING: "true"
+  CODEQL_EXTRACTOR_GO_BUILD_TRACING: "on"
 steps:
   - uses: actions/setup-go@v3
     with: