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>

package.json

@@ -169,6 +169,7 @@
     "blob-polyfill": "^6.0.20211015",
     "chokidar": "^3.5.1",
     "cypress": "^9.6.1",
+    "cypress-real-events": "^1.7.0",
     "enzyme": "^3.11.0",
     "enzyme-to-json": "^3.6.2",
     "eslint": "8.9.0",