Optionaloverrides: MCPInstallOverridesOpens the "Add MCP Server" dialog and persists the result.
Persists an edited server from its form representation, preserving extra stored fields (e.g.
registryMetadata) and clearing keys that don't belong to the chosen server type. Exposed so the
configuration page can edit a server in place (field by field) without opening the dialog.
Converts a server description into the editable form representation, or undefined if unsupported.
Installs a self-contained entry, applying any user-supplied overrides.