fix for flet.map, which was not available after building app

[kacper-the-programmer]

Description

Fixes #3633

Test Code

# code from https://flet.dev/docs/controls/map

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I signed the CLA.
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings

• New and existing tests pass locally with my changes
• I have made corresponding changes to the documentation (if applicable)

Screenshots (if applicable):

Additional details

I tried to build an app, but every time I tried, a fresh version of flet was downloaded, but in theory it should work

[sourcery-ai]

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[sourcery-ai]

Hey @Kacper-OS - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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