CodeRabbit Generated Unit Tests: Add unit tests for PR changes

[coderabbitai]

Unit test generation was requested by @lixmal.

• [client] Replace exclusion routes with scoped default + IP_BOUND_IF on macOS #5918 (comment)

The following files were modified:

• client/internal/routemanager/systemops/systemops_darwin_test.go
• client/internal/routemanager/systemops/systemops_isaddrrouted_test.go
• client/net/env_bound_iface_test.go
• client/net/env_mobile_test.go
• client/net/net_darwin_test.go

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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