test: remove flaky test due to map ordering randomness

[Nagriar]

Summary

Fix flaky test:

    remove_test.go:149: 
        	Error Trace:	/home/runner/work/cli/cli/pkg/cmd/profile/remove/remove_test.go:149
        	Error:      	Not equal: 
        	            	expected: "✓ 'foo' removed successfully.\n"
        	            	actual  : "✓ 'foo' removed successfully. Set a new default profile with 'algolia profile setdefault'.\n"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1,2 +1,2 @@
        	            	-✓ 'foo' removed successfully.
        	            	+✓ 'foo' removed successfully. Set a new default profile with 'algolia profile setdefault'.
        	            	 
        	Test:       	Test_runRemoveCmd/existing_profile_(non-default)

This test is flaky due to the go maps which doesn't have a predictable order and the function test.NewConfigStubWithProfiles relies on the order to define the profile used. This PR leverages a slice to have a predictable ordering

[clemfromspace]

Thanks 🙇