fix(gatsby): don't remove onPluginInit in graphql-engine

[pieh]

Description

#33484 introduced a regression where gatsby-plugin-sharp doesn't init in engine and that result in errors on usage:

error Gatsby-plugin-sharp wasn't setup correctly in gatsby-config.js. Make sure you add it to the plugins array.

Currently

gatsby/packages/gatsby-plugin-sharp/src/gatsby-node.js

Lines 132 to 145 in 3659ec2

	if (coreSupportsOnPluginInit) {
	// to properly initialize plugin in worker (`onPreBootstrap` won't run in workers)
	if (_CFLAGS_.GATSBY_MAJOR === `4`) {
	exports.onPluginInit = async ({ actions }, pluginOptions) => {
	setActions(actions)
	setPluginOptions(pluginOptions)
	}
	} else {
	exports.unstable_onPluginInit = async ({ actions }, pluginOptions) => {
	setActions(actions)
	setPluginOptions(pluginOptions)
	}
	}
	}

is getting bundled as

if (coreSupportsOnPluginInit) {
  // to properly initialize plugin in worker (`onPreBootstrap` won't run in workers)
  if (true) {} else {}
}

With this change it becomes

if (coreSupportsOnPluginInit) {
  // to properly initialize plugin in worker (`onPreBootstrap` won't run in workers)
  if (true) {
    exports.onPluginInit = async ({
      actions
    }, pluginOptions) => {
      setActions(actions);
      setPluginOptions(pluginOptions);
    };
  } else {}
}

[LekoArts]

Published in gatsby@4.5.5