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>

services/actions/helper_test.go

@@ -63,6 +63,23 @@ jobs:
 	}
 }
 
+func TestDispatchInputsForRunJobs(t *testing.T) {
+	// a child carries the callee's `on: workflow_call`, so only a top-level job answers for the run
+	run := &actions_model.ActionRun{Event: "workflow_dispatch", EventPayload: `{"inputs":{"deploy":"true"}}`}
+	job := &actions_model.ActionRunJob{
+		ID: 1, JobID: "deploy",
+		WorkflowPayload: []byte("on: {workflow_dispatch: {inputs: {deploy: {type: boolean}}}}\njobs:\n  deploy:\n    steps: [{run: echo}]\n"),
+	}
+	child := &actions_model.ActionRunJob{
+		ID: 2, JobID: "called", ParentJobID: job.ID,
+		WorkflowPayload: []byte("on: workflow_call\njobs:\n  called:\n    steps: [{run: echo}]\n"),
+	}
+
+	inputs, err := dispatchInputsForRunJobs(run, []*actions_model.ActionRunJob{child, job})
+	require.NoError(t, err)
+	assert.Equal(t, true, inputs["deploy"])
+}
+
 func TestPullRequestTargetBaseSHA(t *testing.T) {
 	prPayload := func(baseSHA string) string {
 		payload, err := json.Marshal(api.PullRequestPayload{