fix: better error loading known hosts error message

Author: ViscousPot

lib/api/manager/git_manager.dart

@@ -84,6 +84,7 @@ class GitManager {
     "failed to parse loose object: invalid header": () async => corruptedLooseObjectError,
     "PEM preamble contains invalid data": () async => pemPreambleError,
     "cannot push non-fastforwardable reference": () async => cannotPushNonFastforwardableError,
+    "error loading known_hosts": () async => errorLoadingKnownHostsError,
   };
 
   static final List<String> resyncStrings = ["uncommitted changes exist in index", "unstaged changes exist in workdir"];

lib/constant/strings.dart

@@ -92,6 +92,9 @@ const String uncommittedChangeOverwrittenError =
     "Local uncommitted changes conflict with incoming changes. Commit or discard your local changes and sync again, or use Download & Overwrite / Upload & Overwrite to resolve.";
 const String failedToReadIndex = "failed to read index";
 const String failedToReadIndexError = "The repository index is corrupted or missing. Use Auto-Fix to rebuild it.";
+const String errorLoadingKnownHosts = "error loading known_hosts";
+const String errorLoadingKnownHostsError =
+    "Could not load SSH known hosts file. Try toggling \"Disable SSL Verification\" in repository settings, or re-enter your SSH credentials.";
 
 // Sync Dialogs
 const String resolvingMerge = "Resolving merge…";