Fix NewHTTP to use the provided client parameter instead of always us…

[honeynil]

Fix HTTP client parameter bug and improve disk storage consistency

Description

This PR fixes two bugs found in the codebase:

1. HTTP Storage Client Bug: The NewHTTP function in internal/infra/storage/http.go was ignoring the client parameter and always using http.DefaultClient. This prevented users from configuring custom HTTP clients with specific timeouts or transport settings.

2. Disk Storage Consistency Issue: The writeMeta function in internal/infra/storage/disk.go was using O_TRUNC flag instead of O_EXCL, which made it inconsistent with writeFile and prevented the retryOnExist helper from working correctly for metadata files.

Changes

• internal/infra/storage/http.go: Changed line 21 to use the provided client parameter instead of http.DefaultClient
• internal/infra/storage/disk.go: Changed line 338 to use O_EXCL flag instead of O_TRUNC for consistency

Impact

• HTTP storage can now properly use custom HTTP clients with configured timeouts and transports
• Disk storage retry logic now works correctly for metadata files
• Code is more consistent and maintainable
• No breaking changes - all existing tests pass

TODOs

Read the Contribution guidelines.

• Generate the docs. (No doc changes needed - internal implementation detail)
• Run the relevant tests successfully. (All tests pass)
• Include release notes. (See below)

Release Notes (draft)

Fixed HTTP client parameter being ignored in NewHTTP function and improved disk storage consistency by using O_EXCL flag in writeMeta.

Migration Guide

No migration needed - these are bug fixes with no API changes.

[xakep666]

@honeynil thank you for fix!