Made DL extensions visible even after the extended DL

[reppuli92]

Description

What?
I made the personal extended deadlines visible for students on the Your Points page even after the extended deadline has passed, as requested in issue #1495

Why?

To improve the user experience so that the extended DL doesn't have to be looked up separately

How?

Removed the filtering by current time logic in the extended deadline lookup function

Fixes #1495

Testing

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What type of test did you run?

• Accessibility test using the WAVE extension.
• Django unit tests.
• Selenium tests.
• Other test. (Add a description below)
• Manual testing.
  I ran the Playwright e2e test suite in addition to all existing unit tests.

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• Chrome
• Firefox
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Think of what is affected by these changes and could become broken

Translation

• Did you modify or add new strings in the user interface? (Read about how to create translation)

Programming style

• Did you follow our style guides?
• Did you use Python type hinting in all functions that you added or edited? (type hints for function parameters and return values)

Have you updated the README or other relevant documentation?

• documents inside the doc directory.
• README.md.
• Aplus Manual.
• Other documentation (mention below which documentation).

Is it Done?

• Reviewer has finished the code review
• After the review, the developer has made changes accordingly
• Customer/Teacher has accepted the implementation of the feature

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[ihalaij1]

Nice!

[ihalaij1]

I made minor changes to the commit message (made it present tense instead of past tense and added Fixes #1495 to the footer).