Paste shortcut (cmd/ctrl+V) conflicts with new calypso shortcut

[guillep]

Bug description

In calypso, sometimes copy-pasting freezes entirely the text input.

To Reproduce

I got to reliably reproduce it since build 1198 by doing:

• Copy this in Calypso, for example in the class CoResultSet

acceptsContents: stringWithContentsToBeAccepted usingFilterString: filterString
	
	aString isEmpty or: [ e contents beginsWith: aString ] ].
			results := results select: [ :e | aString isEmpty or: [ e contents beginsWith: aString ] ] ]
		ifFalse: [
			"Smaller filter, reset results and filter"
			results := OrderedCollection new.
			fetcher reset.
			fetcher := fetcher select: [ :e | aString isEmpty or: [ e contents beginsWith: aString ] ].
		].
	completionString := aStringng

• Copy "filterString"
• select the second occurrence of aString (the one inside [ e contents beginsWith: aString ] ].
• paste

Not only it does not paste anymore, but also all text input is kinda broken

Version information:
I chased the bug to build 1198, which includes the following PRs

It seems the culprit is 2d37110
Which introduces some shortcut conflicts on Cmd/Ctrl+V

SycMergeVariableCommand class >> fullBrowserShortcutActivation [
	<classAnnotation>

	^CmdShortcutActivation by: $v meta, $m meta for: ClyFullBrowserVariableContext
]

SycMergeVariableCommand class >> sourceCodeShortcutActivation [
	<classAnnotation>

	^CmdShortcutActivation by: $v meta, $m meta for: ClySourceCodeContext 
]