arturovt dee6ef89c7 refactor(core): tree-shake HOST_TAG_NAME in prod (#63861)
Previously, HOST_TAG_NAME had its __NG_ELEMENT_ID__ set at the top level. This
prevented tree-shaking, since the bundler had to keep the assignment as a
potential side effect even when the token was never used.

This change moves the token creation and __NG_ELEMENT_ID__ assignment into a
@__PURE__ IIFE. If HOST_TAG_NAME is not injected anywhere, the IIFE result is
unused and can be dropped entirely by the optimizer. If it is used, the token
still behaves the same at runtime.

PR Close #63861
2025-09-17 17:40:35 +00:00
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