[REQUIRED] Environment info

firebase-tools: 14.9.0

Platform: Windows

[REQUIRED] Test case

1. Export a firestore-send-email extension configuration using: firebase ext:export (ensure the created extensions/firestore-send-email.env file does not contain a setting for the maximum function memory)
2. Reconfigure the extension using firebase ext:configure firestore-send-email --local
3. Leave all values as is but in the last step, select 256MiB memory:

[REQUIRED] Steps to reproduce

See above

[REQUIRED] Expected behavior

The configured memory option is written to the extensions/firestore-send-email.env file.

[REQUIRED] Actual behavior

undefined=256Mi is written to the extensions/firestore-send-email.env file.

So the key of this setting is incorrect and I doubt it will work when installing the extension.