Hashtag parsing tests for various inputs

[azharcodeit]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (please specify)

Related Issue

Related to Issue #1613

Describe this PR

Context:

We accept a string input for hashtags, with some parsing to ensure they are always in hashtag format.

For example:

• tag1, tag2, tag3
• tag1 tag2 tag3
• tag1 tag2 tag3
• tag1, tag2 tag3 tag4
• TAG1, tag2 TAG3

Any other random assortment the user could provide!

In the end, the project details response should return an array of hashtags:

• ['#tag1', '#tag2', '#tag3']

What was done:

This PR tests hashtag parsing with various edge cases. Adjusts expected outputs in tests to reflect correct hashtag processing.

Screenshots

Alternative Approaches Considered

Review Guide

Command to run all tests defined in the project using pytest:

docker compose run --rm api pytest

Checklist before requesting a review

• 📖 Read the FMTM Contributing Guide: https://github.com/hotosm/fmtm/blob/main/CONTRIBUTING.md
• 📖 Read the HOT Code of Conduct: https://docs.hotosm.org/code-of-conduct
• 👷‍♀️ Create small PRs. In most cases, this will be possible.
• ✅ Provide tests for your changes.
• 📝 Use descriptive commit messages.
• 📗 Update any related documentation and include any relevant screenshots.

[optional] What gif best describes this PR or how it makes you feel?

[azharcodeit]

@spwoodcock, please have a look.

Reduced test cases for hashtags;
Kept the initial hashtag validation since there's no need to convert tags to lowercase, and the FMTM tag should remain in uppercase.