[BUG]:"Submit Your Idea" button on /ideas page not working properly

### Bug Description

Description
The "Submit Your Idea" button on the /ideas page is not functioning as expected.
Currently the button is linked to:

mailto:aossie.oss@gmail.com

When clicking the button, the browser asks to choose an email application. After selecting one (for example Gmail in the browser), it asks for account selection but no email compose window opens and nothing happens afterward.

Current Behavior
Browser asks to choose an email handler
After selecting the account, no compose window opens
The action appears to fail silently

Expected Behavior
Clicking the button should either:
Open the user's default email client with a pre-filled compose window, or
Redirect to a proper idea submission form.

Question
Should the button continue using the current mailto:aossie.oss@gmail.com link, or is there a different submission link or form URL that should be used instead?

If a form or alternate submission method exists, the button can be updated to redirect users there instead.

File Reference
src/components/ideas/IdeasHeader.jsx

Current implementation:

Submit Your Idea

Please confirm whether the same email link should be retained or replaced with the correct submission link

### Steps to Reproduce

Go to https://aossie.org/ideas
Scroll to the "Have an Idea?" section
Click the "Submit Your Idea" button
Select a browser/email account when prompted

### Logs and Screenshots

### Environment Details

OS: Windows 10
Browser: Google Chrome (Version 145.x)
Website: https://aossie.org/ideas

### Impact

High - Major feature is broken

### Code of Conduct

- [x] I have joined the [Discord server](https://discord.gg/hjUhu33uAn) and will post updates there
- [x] I have searched existing issues to avoid duplicates