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/util/util.go

@@ -107,7 +107,7 @@ func FastCryptoRandomBytes(length int) []byte {
 	// ChaCha8 is about 20x times faster than system's crypto/rand.
 	// It is suitable for UUIDs, session IDs, etc
 	pool := chaCha8RandPool()
-	chaCha8Rand := pool.Get().(*rand2.ChaCha8)
+	chaCha8Rand := pool.Get().(*rand2.ChaCha8) //nolint:forcetypeassert // the pool's New only ever makes *rand2.ChaCha8
 	defer pool.Put(chaCha8Rand)
 	buf := make([]byte, length)
 	_, _ = chaCha8Rand.Read(buf)
@@ -270,15 +270,16 @@ func OptionalArg[T any](optArg []T, defaultValue ...T) (ret T) {
 }
 
 type EnumConst[T comparable] interface {
+	comparable
 	EnumValues() []T
 }
 
 // EnumValue returns the value if it's in the enum const's values,
 // otherwise returns the first item of enums as default value.
-func EnumValue[T comparable](val EnumConst[T]) (ret T, valid bool) {
+func EnumValue[T EnumConst[T]](val T) (ret T, valid bool) {
 	enums := val.EnumValues()
-	if slices.Contains(enums, val.(T)) {
-		return val.(T), true
+	if slices.Contains(enums, val) {
+		return val, true
 	}
 	return enums[0], false
 }