Move spaces tests from Puppeteer to Cypress (#8645)

* Move spaces tests from Puppeteer to Cypress

* Add missing fixture

* Tweak synapsedocker to not double error on a docker failure

* Fix space hierarchy loading race condition

Fixes https://github.com/matrix-org/element-web-rageshakes/issues/10345

* Fix race condition when creating public space with url update code

* Try Electron once more due to perms issues around clipboard

* Try set browser permissions properly

* Try to enable clipboard another way

* Try electron again

* Try electron again again

* Switch to built-in cypress feature for file uploads

* Mock clipboard instead

* TMPDIR ftw?

* uid:gid pls

* Clipboard tests can now run on any browser due to mocking

* Test Enter as well as button for space creation

* Make the test actually work

* Update cypress/support/util.ts

Co-authored-by: Eric Eastwood <erice@element.io>

Co-authored-by: Eric Eastwood <erice@element.io>

.gitignore

@@ -26,5 +26,4 @@ package-lock.json
 /cypress/synapselogs
 # These could have files in them but don't currently
 # Cypress will still auto-create them though...
-/cypress/fixtures
 /cypress/performance