FR-12555 - support-angular-16-backward-compatible

[yuvalotem1]

Support angular 16 backward compatible without signals

1. enable ivy by removing "enablvy": false to support angular 16 build - angular 16 drop support to view engine so only ivy engine is enabled checkout angular CHANGELOG.md file-
   

2. Change angular version from ~12.0.5 to ^12.0.0 to remove error build of incompatible angular versions with ivy engine

3. Avoid updating angular version to 16 because this will drop support for previous versions

How should we test it

• tested on angular 12 + 14 + 16 during development
• should be tested also for 13 and 15
• also test full sanity for angular 16

Releasing

• In my opinion this version should be a major 5 => 6 just like angular version 15 => 16 , this way it will make it very clear to our customers that this version is the one compatible with angular 16 when upgrading their angular version

after checking this pr move on to the signals support pr - #450