dialyzer: Fix slow Dialyzer run on Elixir source code #18464

Job	Run time
Build Erlang/OTP (64-bit)	5m 8s
Event File	4s
Build Erlang/OTP (iOS)	4m 42s
Build Erlang/OTP (Windows)	11m 57s
Build Erlang/OTP (Types and Flavors)	7m 58s
Build Erlang/OTP (macOS)	3m 38s
Build and check documentation	4m 51s
Build Erlang/OTP (32-bit)	8m 35s
Run static analysis	6m 33s
Build Erlang/OTP (cross-compile)	13m 36s
Build Erlang/OTP (clang)	5m 26s
Test Erlang/OTP (dialyzer)	14m 45s
Release Erlang/OTP	0s
Test Erlang/OTP (system)	8m 19s
	1h 35m 32s

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