ctx.actions.declare_file now used in @angular/bazel ng_module rule as ctx.new_file is now deprecated. Fixes error:
```
File "ng_module.bzl", line 272, in _expected_outs
ctx.new_file(ctx.genfiles_dir, (ctx.label.name ..."))
Use ctx.actions.declare_file instead of ctx.new_file.
Use --incompatible_new_actions_api=false to temporarily disable this check.
```
This can be worked around with incompatible_new_actions_api flag but may as well fix it proper so downstream doesn't require this flag due to this code.
Also, depset() is no longer iterable by default without a flag. This required fixing in a few spots in @angular/bazel.
fix: foo
PR Close#31019
Greg Magolan
28d3bfc416