Fix P9's #testExternalIDEDependencies

[tinchodias]

The PR to merge into Pharo 9.0 showed some tests failures.
One of them is testExternalIDEDependencies which detects that a dependency to Ring-Core is introduced by v2.

[tinchodias]

I've checked that this test does pass in current P9.

I checked also in my P9 with Iceberg v2 loaded to debug.
In the context of the failing test, I evaluated:

	packages select: [ :aPackage |
		| deps externalDeps | 
		deps := self dependenciesReport dependenciesOf: aPackage.
		externalDeps := deps copyWithoutAll: packages.
		externalDeps notEmpty ].

The only element is Iceberg-Plugin-Calypso... the reason is that I moved 3 commands from Calypso-SystemPlugins-Monticello-Browser to this new Iceberg package.

I can put back those 3 commands to the original Calypso-SystemPlugins-Monticello-Browser package to keep the test green.

[tinchodias]

Should be fixed in 2447358

[tinchodias]

This wasn't fixed. I hope 8d34df5 finally achieves it.