chore: enable forcetypeassert linter, fix issues (#38804)

Enable [`forcetypeassert`](https://github.com/gostaticanalysis/forcetypeassert)
linter to prevent unchecked type assertions. ~650 issues fixed, most
fixes were clean, some use `setting.PanicInDevOrTesting`.

The only behaviour changes are where code would previously send a 500 error
or panic, a 4xx error is now emitted.

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/globallock/globallock_test.go

@@ -21,7 +21,9 @@ func TestLockAndDo(t *testing.T) {
 		locker := newTestRedisLocker(t)
 		defaultLocker.Store(new(locker))
 		testLockAndDo(t)
-		require.NoError(t, locker.(*redisLocker).Close())
+		rl, ok := locker.(*redisLocker)
+		require.True(t, ok)
+		require.NoError(t, rl.Close())
 	})
 	t.Run("memory", func(t *testing.T) {
 		defaultLocker.Store(new(NewMemoryLocker()))