wazevo: fixes FunctionDefinition index for listeners (#2126) #4056

Job	Run time
Build TinyGo test binary	5s
Build Zig test binary	7s
libsodium (Ubuntu, amd64, optimizing)	6m 11s
Go-1.21 (Ubuntu, amd64, baseline)	6m 35s
wasi-testsuite (ubuntu-22.04)	28s
libsodium (macOS, arm64, optimizing)	5m 38s
Go-1.22 (Ubuntu, amd64, baseline)	6m 50s
wasi-testsuite (macos-12)	47s
Go-1.21 (macOS, amd64, baseline)	6m 56s
Go-1.22 (macOS, amd64, baseline)	7m 4s
wasi-testsuite (windows-2022)	1m 38s
Go-1.21 (Windows, amd64, baseline)	7m 18s
Go-1.22 (Windows, amd64, baseline)	6m 46s
Go-1.21 (macOS, arm64, optimizing)	7m 45s
Go-1.22 (macOS, arm64, optimizing)	7m 55s
Go-1.21 (Ubuntu, amd64, optimizing)	9m 55s
Go-1.22 (Ubuntu, amd64, optimizing)	10m 20s
TinyGo (Ubuntu, amd64, baseline)	1m 50s
TinyGo (macOS, amd64, baseline)	2m 31s
TinyGo (Windows, amd64, baseline)	3m 12s
TinyGo (macOS, arm64, optimizing)	3m 30s
TinyGo (Ubuntu, amd64, optimizing)	2m 36s
Zig (Ubuntu, amd64, baseline)	4m 1s
Zig (macOS, amd64, baseline)	4m 22s
Zig (Windows, amd64, baseline)	7m 3s
Zig (macOS, arm64, optimizing)	1m 38s
Zig (Ubuntu, amd64, optimizing)	1m 55s
	2h 4m 56s

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