Improve stack trace dump and fix coding guideline CI (#2599)

Avoid the stack traces getting mixed up together when multi-threading is enabled
by using exception_lock/unlock in dumping the call stacks.

And remove duplicated call stack dump in wasm_application.c.

Also update coding guideline CI to fix the clang-format-12 not found issue.

.github/workflows/coding_guidelines.yml

@@ -16,7 +16,7 @@ concurrency:
 
 jobs:
   compliance_job:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: checkout
         uses: actions/checkout@v3