Cannot rename or delete runs

[tobiasofsn]

Running trackio show always opens trackio in read-only mode, preventing the user from renaming and deleting runs from the Runs tab.

Related changes

PR #450 - with this change the browser is opened using a URL without the write_token parameter
PR #455 - with this change the !spacesMode condition is removed from canMutateRuns assignment in Runs.svelte

[abidlabs]

Yikes thanks for flagging @tobiasofsn. We'll fix this and add a test.