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>

routers/api/v1/admin/hooks.go

@@ -137,7 +137,7 @@ func CreateHook(ctx *context.APIContext) {
 	//   "201":
 	//     "$ref": "#/responses/Hook"
 
-	form := web.GetForm(ctx).(*api.CreateHookOption)
+	form := web.GetForm[*api.CreateHookOption](ctx)
 
 	utils.AddSystemHook(ctx, form)
 }
@@ -166,7 +166,7 @@ func EditHook(ctx *context.APIContext) {
 	//   "200":
 	//     "$ref": "#/responses/Hook"
 
-	form := web.GetForm(ctx).(*api.EditHookOption)
+	form := web.GetForm[*api.EditHookOption](ctx)
 
 	// TODO in body params
 	hookID := ctx.PathParamInt64("id")