fix(actions): keep github.event.inputs as strings for workflow_dispatch (#38899)

`github.event.inputs` must mirror the raw `workflow_dispatch` payload,
where
GitHub keeps every input as a string. Only the separate `inputs` context
preserves declared types, e.g. booleans. A previous fix coerced boolean
inputs in the single map that fed both contexts, so
`github.event.inputs.someBool` became a real boolean and comparisons
like
`== 'true'` stopped matching.

`github.event.inputs` now stays string-only again. The `inputs` context
used
for server-side `if:` evaluation of needs-gated/matrix-deferred jobs
re-coerces booleans independently, from the job's own workflow
declaration,
so that path keeps working correctly.

Fixes https://github.com/go-gitea/gitea/issues/38896

---------

Co-authored-by: Zettat123 <zettat123@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>

modules/util/util.go

@@ -26,6 +26,11 @@ func IsEmptyString(s string) bool {
 	return len(strings.TrimSpace(s)) == 0
 }
 
+// ParseYamlBool parses YAML 1.2 boolean values into bool
+func ParseYamlBool(s string) bool {
+	return s == "true" || s == "True" || s == "TRUE"
+}
+
 // NormalizeEOL will convert Windows (CRLF) and Mac (CR) EOLs to UNIX (LF)
 func NormalizeEOL(input []byte) []byte {
 	var right, left, pos int