fix: discard edge function declarations without a path or pattern

[eduardoboucas]

Summary

In certain situations, CLI is calling Edge Bundler's generateManifest function with functions that don't have a path or a pattern properties, which violates the expected type. This is causing a fatal error when running netlify dev.

This PR fixes that by discarding any invalid declarations.

[github-actions]

📊 Benchmark results

Comparing with 990da12

Package size: 254 MB

(no change)

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└───┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴──>
    T-10    T-9     T-8     T-7     T-6     T-5     T-4     T-3     T-2     T-1      T    

Legend

• T-10 (67e4e39): 247 MB
• T-9 (90a357d): 247 MB
• T-8 (d3be8a1): 247 MB
• T-7 (be5098e): 247 MB
• T-6 (fd7db45): 247 MB
• T-5 (57ee933): 247 MB
• T-4 (26c409d): 247 MB
• T-3 (38f548f): 247 MB
• T-2 (ff1eecb): 254 MB
• T-1 (990da12): 254 MB
• T (current commit): 254 MB

[khendrikse]

Thanks :)