move httpx imports to function scope

[adhami3310]

No description provided.

[greptile-apps]

Greptile Summary

This PR is focused on optimizing imports across the codebase by moving httpx imports from module-level to function-level scope. The changes span multiple files and are part of a larger performance optimization initiative. The main goals are:

1. Improve application startup time by lazy-loading the httpx library only when needed
2. Reduce memory usage when network functionality isn't required
3. Follow Python best practices for import optimization

The changes are consistently applied across the following key files:

• custom_components.py
• telemetry.py
• net.py
• redir.py
• registry.py

Additionally, the PR introduces disk caching functionality in registry.py for optimizing best registry selection.

Confidence score: 4/5

1. This PR is generally safe to merge as it's a straightforward optimization pattern.
2. The score is 4/5 because while the changes follow best practices and are well-structured, the distributed nature of the changes across multiple files introduces a small risk of integration issues.
3. Files needing more attention:
   • prerequisites.py: This file has inconsistent changes noted in the summary and needs review
   • registry.py: The new caching functionality should be tested thoroughly

_{8 files reviewed, 5 comments}

_{Edit Code Review Bot Settings | Greptile}

[codspeed-hq]

CodSpeed Performance Report

Merging #5612 will not alter performance

_{Comparing move-httpx-imports-to-function-scope (4c66945) with main (7e0a95f)}

Summary

✅ 8 untouched benchmarks

[masenf]

is this mainly just to speed up import reflex?

[adhami3310]

is this mainly just to speed up import reflex?

yea