[Python] Add Watch transform with growth_of polling SDF - #39023

Failed to save: Unable to reserve cache with key setup-python-Linux-x64-24.04-Ubuntu-python-3.14.6-pip-e62f7c130fcb7cf876605f148ec58b2d13aa945bf777df6e9c31e39094649216. More details: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes

Cache reservation failed: cache write denied: token has no writable scopes