refactor(dokploy): improve repository selection UI for version control providers

- Updated repository selection logic across Bitbucket, Gitea, GitHub, and GitLab components to display a placeholder when no repository is selected.
- Enhanced loading state messages for better user experience, ensuring users are prompted to select an account before loading repositories.
- Cleaned up conditional rendering for loading states and account selection prompts in the UI.

apps/dokploy/components/dashboard/compose/general/generic/save-bitbucket-provider-compose.tsx

@@ -247,13 +247,13 @@ export const SaveBitbucketProviderCompose = ({ composeId }: Props) => {
 														!field.value && "text-muted-foreground",
 													)}
 												>
-													{isLoadingRepositories
-														? "Loading...."
-														: field.value.owner
-															? repositories?.find(
+													{!field.value.owner
+														? "Select repository"
+														: isLoadingRepositories
+															? "Loading...."
+															: repositories?.find(
 																	(repo) => repo.name === field.value.repo,
-																)?.name
-															: "Select repository"}
+																)?.name ?? "Select repository"}
 
 													<ChevronsUpDown className="ml-2 h-4 w-4 shrink-0 opacity-50" />
 												</Button>
@@ -265,11 +265,15 @@ export const SaveBitbucketProviderCompose = ({ composeId }: Props) => {
 													placeholder="Search repository..."
 													className="h-9"
 												/>
-												{isLoadingRepositories && (
+												{!bitbucketId ? (
+													<span className="py-6 text-center text-sm text-muted-foreground">
+														Select a Bitbucket account first
+													</span>
+												) : isLoadingRepositories ? (
 													<span className="py-6 text-center text-sm">
 														Loading Repositories....
 													</span>
-												)}
+												) : null}
 												<CommandEmpty>No repositories found.</CommandEmpty>
 												<ScrollArea className="h-96">
 													<CommandGroup>