Refactor startup deprecation messages (#30305)

It doesn't change logic, it only does:

1. Rename the variable and function names
2. Use more consistent format when mentioning config section&key
3. Improve some messages

modules/setting/setting.go

@@ -235,9 +235,7 @@ var configuredPaths = make(map[string]string)
 func checkOverlappedPath(name, path string) {
 	// TODO: some paths shouldn't overlap (storage.xxx.path), while some could (data path is the base path for storage path)
 	if targetName, ok := configuredPaths[path]; ok && targetName != name {
-		msg := fmt.Sprintf("Configured path %q is used by %q and %q at the same time. The paths must be unique to prevent data loss.", path, targetName, name)
-		log.Error("%s", msg)
-		DeprecatedWarnings = append(DeprecatedWarnings, msg)
+		logStartupProblem(1, log.ERROR, "Configured path %q is used by %q and %q at the same time. The paths must be unique to prevent data loss.", path, targetName, name)
 	}
 	configuredPaths[path] = name
 }