Run gopls modernize auto fix

[torcolvin]

Results of: go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix

Integration Tests

• GSI=true,xattrs=true https://jenkins.sgwdev.com/job/SyncGatewayIntegration/125/

[Copilot]

Pull Request Overview

This PR applies automated modernization fixes to the Go codebase, converting legacy patterns to more modern Go syntax. The changes are the result of running the gopls modernize tool which suggests and applies various code improvements.

Key changes include:

• Replacing interface{} with any (Go 1.18+ alias)
• Converting strings.Split to strings.SplitSeq for range iterations
• Using fmt.Appendf instead of fmt.Sprintf with byte slice conversion
• Utilizing maps.Copy for copying maps
• Replacing numeric range loops with range-only syntax
• Using slices.Contains for slice membership checks

Reviewed Changes

Copilot reviewed 232 out of 232 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Various Go files	Replaced interface{} with any throughout the codebase
Multiple files	Converted strings.Split + range to strings.SplitSeq
Several files	Used fmt.Appendf(nil, ...) instead of []byte(fmt.Sprintf(...))
Multiple files	Replaced manual map copying with maps.Copy
Various test files	Simplified numeric range loops to range-only syntax
Handler and utility files	Applied slices.Contains for slice membership checks

Comments suppressed due to low confidence (5)