fix: monthly rent filter

[mcgarrye]

This PR addresses #(744)

• Addresses the issue in full
• Addresses only certain aspects of the issue

Description

Units can be created with decimals in the monthly rent field. The existing monthly rent filters on the public landing page and listings page rely on filter code that was attempting to cast these values as integers, causing an error. By casting them as floats, the filtering is working again.

How Can This Be Tested/Reviewed?

Run yarn setup in the api dir to add units with floats in the monthlyRent field. Run the application. Test the Max Monthly Rent filter on the landing page and the Min/Max Rent filters on the listings page.

Author Checklist:

• Added QA notes to the issue with applicable URLs
• Reviewed in a desktop view
• Reviewed in a mobile view
• Reviewed considering accessibility
• Added tests covering the changes
• Made corresponding changes to the documentation
• Ran yarn generate:client and/or created a migration when required

Review Process:

• Read and understand the issue
• Ensure the author has added QA notes
• Review the code itself from a style point of view
• Pull the changes down locally and test that the acceptance criteria is met
• Either (1) explicitly ask a clarifying question, (2) request changes, or (3) approve the PR, even if there are very small remaining changes, if you don't need to re-review after the updates

[YazeedLoonat]

LGTM