Increased the memory size of multiple_flutters to help identify regressions in performance

This is not a regression and will affect benchmark's readings.

Fixes https://github.com/flutter/flutter/issues/93553

Revert "Reland "Exit on deprecated v1 embedding when trying to run or build (#92901)" (#93386)" (#93518)

This reverts commit eabb7cbc.

It broke multiple tests.

* Add DevTools version to `flutter --version` output.

* review comments

* fix test

* add explanatory comment

* dummy commit to kick bots
Co-authored-by: Christopher Fujino <christopherfujino@gmail.com>

This reverts commit 6153bbef.