WIP feat(APP-3895): Implement various UX improvements

[thekidnamedkd]

Description

• - In the setMetadata native action, “proposed” should be listed before “existing”
• - Apply title casing to “launch” dates in details sections.
• - Remove title casing from “By”.
• - Proposal body text is larger font than proposal summary. Should be the other way around.
• - When entering raw calldata for custom actions don’t pre-populate data with a value of “0x”. It should be placeholder text of “0x…”.
• - In the action accordion header, if address is blackhole 0x000…0000 address, don’t show the address or link to block explorer
• - All address truncation should be 0x1234…6789. Right now the 0x is counting as 2 digits and makes it look like 0x12….6789.

Task: APP-3895

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• Manually smoke tested the functionality locally
• Confirmed there are no new warnings or errors in the browser console
• Made the corresponding changes to the documentation
• Added tests that prove my fix is effective or that my feature works
• Updated the CHANGELOG.md file after the [UPCOMING] title and before the latest version
• (For User Stories only) Double-checked that all Acceptance Criteria are satisified
• Confirmed there are no new warnings on automated tests
• Selected the correct base branch
• Commented the code in hard-to-understand areas
• Followed the code style guidelines of this project
• Reviewed that the files changed in GitHub’s UI reflect my intended changes
• Confirmed the pipeline checks are not failing