home-assistant-custom-components.ha_mcp_tools: restrict update script to release versions

Same fix as the previous commit for the standalone ha-mcp package.
The upstream repo tags dev builds (v6.6.1.dev211) alongside releases,
causing the update bot to open unwanted PRs (e.g. #490375).

Add a --version-regex that matches only three-segment release versions.

pkgs/servers/home-assistant/custom-components/ha_mcp_tools/package.nix

@@ -2,6 +2,7 @@
   lib,
   buildHomeAssistantComponent,
   fetchFromGitHub,
+  nix-update-script,
 }:
 
 buildHomeAssistantComponent rec {
@@ -16,6 +17,10 @@ buildHomeAssistantComponent rec {
     hash = "sha256-yAJbvfIH5ewRTip8whbOKxE479qAihESaiLFTnhpRkY=";
   };
 
+  passthru.updateScript = nix-update-script {
+    extraArgs = [ "--version-regex=^v([0-9]+\\.[0-9]+\\.[0-9]+)$" ];
+  };
+
   meta = {
     changelog = "https://github.com/homeassistant-ai/ha-mcp/releases/tag/v${version}";
     description = "Home Assistant custom component for the MCP (Model Context Protocol) server";