Previously: #18840 (#18840 (comment)), #21467 (comment)

This pull request seeks to resolve an issue where child process failures occurring during bin/api-docs/update-api-docs.js do not result in a non-zero exit code. As seen at #21467 (comment), this can result in false positives where errors exist. The changes consist of a revert of the commit 4179376 from #18840.

Testing Instructions:

Verify update-api-docs.js succeeds:

node bin/api-docs/update-api-docs.js
echo $?
# 0

Verify update-api-docs.js fails when parse error occurs:

diff --git a/packages/editor/src/store/selectors.js b/packages/editor/src/store/selectors.js
index 5a06ba465..2c1a413b2 100644
--- a/packages/editor/src/store/selectors.js
+++ b/packages/editor/src/store/selectors.js
@@ -217 +217 @@ export function getCurrentPostType( state ) {
-	return state.postType;
+	return state?.postType;

node bin/api-docs/update-api-docs.js
# SyntaxError: Unexpected token .
echo $?
# 1