Refer to expired SSH keys in the past tense

What does this MR do?

This MR updates the profile SSH key page labels to refer to expired SSH key in the past tense as described in #326995 (closed).

Testing & Setup

You can view the changes under [GDK_HOST]/-/profile/keys > Your SSH keys

Screenshots (strongly suggested)

Before	After

Does this MR meet the acceptance criteria?

Conformity

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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
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Security

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Related to #326995 (closed)