[Actions] Fix a bug with diff showing up due to path mismatch

.github/workflows/JsonGenerator.yml

@@ -225,6 +225,14 @@ jobs:
                   > "diffs/combined.diff" || true
             fi
 
+            # Strip the differing root from the diff's ---/+++ file header lines so both sides share an identical path
+            sed -i -E \
+               -e 's#^(--- )baseline/#\1#' \
+               -e 's#^(\+\+\+ )generated/#\1#' \
+               -e 's#^(--- )generated/#\1#' \
+               -e 's#^(\+\+\+ )baseline/#\1#' \
+               "diffs/combined.diff"
+
             if [[ -s "diffs/combined.diff" ]]; then
                HAS_DIFF="true"
                export HAS_DIFF

.github/workflows/LuaGenerator.yml

@@ -187,6 +187,14 @@ jobs:
                   > "diffs/combined.diff" || true
             fi
 
+            # Strip the differing root from the diff's ---/+++ file header lines so both sides share an identical path
+            sed -i -E \
+               -e 's#^(--- )baseline/#\1#' \
+               -e 's#^(\+\+\+ )generated/#\1#' \
+               -e 's#^(--- )generated/#\1#' \
+               -e 's#^(\+\+\+ )baseline/#\1#' \
+               "diffs/combined.diff"
+
             if [[ -s "diffs/combined.diff" ]]; then
                HAS_DIFF="true"
                export HAS_DIFF

.github/workflows/PluginSkeletonGenerator.yml

@@ -293,6 +293,14 @@ jobs:
                   "baseline_${name}" "artifacts/PluginSkeleton-${name}" \
                   > "diffs/${name}.diff" || true
 
+                # Strip the differing roots from the diff's ---/+++ file header lines so both sides share an identical path
+                sed -i -E \
+                  -e "s#^(--- )baseline_${name}/#\\1#" \
+                  -e "s#^(\\+\\+\\+ )artifacts/PluginSkeleton-${name}/#\\1#" \
+                  -e "s#^(--- )artifacts/PluginSkeleton-${name}/#\\1#" \
+                  -e "s#^(\\+\\+\\+ )baseline_${name}/#\\1#" \
+                  "diffs/${name}.diff"
+
                 if [[ -s "diffs/${name}.diff" ]]; then
                   npx --yes diff2html-cli@5.2.15 -i file -F "site/$RUN_DIR/diff/${name}.html" -- "diffs/${name}.diff"
                   echo "$name" >> diffs/plugins_with_diffs.txt

.github/workflows/ProxyStubGenerator.yml

@@ -233,6 +233,14 @@ jobs:
                   > "diffs/combined.diff" || true
             fi
 
+            # Strip the differing root from the diff's ---/+++ file header lines so both sides share an identical path
+            sed -i -E \
+               -e 's#^(--- )baseline/#\1#' \
+               -e 's#^(\+\+\+ )generated/#\1#' \
+               -e 's#^(--- )generated/#\1#' \
+               -e 's#^(\+\+\+ )baseline/#\1#' \
+               "diffs/combined.diff"
+
             if [[ -s "diffs/combined.diff" ]]; then
                HAS_DIFF="true"
                export HAS_DIFF  # Update export so Python sees "true"