Align license compliance `deny` classification outcome with user expectations - Add tooltip and text copy to policy tab

See: #196845 (closed)

Implementation:

In https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/app/assets/javascripts/vue_shared/license_compliance/license_management.vue#L104

we need to add a tooltip component with the correct text.

We should aim to use the GlTooltip and GlIcon components.

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Add tooltip to license policy tab with text copy as per: