Fix SSH Key Password (keyPassword) Field Naming Mismatch Between Frontend and Backend (#375)

* Refactor key_password to keyPassword for consistency across SSH routes

* Standardizes keyPassword field handling and simplifies auth field logic

Standardizes the handling of the `keyPassword` field by converting
`key_password` to camelCase and ensuring consistent output while
preserving resolved credentials. Removes redundant snake_case
fields to avoid duplication.

Simplifies UI handling of authentication fields by allowing
non-relevant fields to persist, delegating filtering logic to the
backend for cleaner and more maintainable code.

Improves code clarity and aligns with consistent data handling
practices.

* Cleanup code + resolve conversion logic

---------

Co-authored-by: LukeGus <bugattiguy527@gmail.com>

src/backend/ssh/server-stats.ts

@@ -478,7 +478,7 @@ async function resolveHostCredentials(
 function addLegacyCredentials(baseHost: any, host: any): void {
   baseHost.password = host.password || null;
   baseHost.key = host.key || null;
-  baseHost.keyPassword = host.keyPassword || null;
+  baseHost.keyPassword = host.key_password || host.keyPassword || null;
   baseHost.keyType = host.keyType;
 }