cloudflare: export channel integrations #25575

Export from @sentry/cloudflare the channel integrations that Node, Bun and Deno export: expressIntegration, hapiIntegration, koaIntegration, nitroIntegration, graphqlIntegration,mysqlIntegration, mysql2Integration, postgresIntegration, postgresJsIntegration, neonIntegration, redisIntegration, mongoIntegration, mongooseIntegration, tediousIntegration, knexIntegration, dataloaderIntegration, genericPoolIntegration,kafkaIntegration, amqplibIntegration, lruMemoizerIntegration, firebaseIntegration, mcpServerIntegration, openAIIntegration, anthropicAIIntegration, googleGenAIIntegration,mistralAIIntegration, groqIntegration, togetherAIIntegration, typesafeIntegration, langChainIntegration, langGraphIntegration, mastraIntegration, piDurableIntegration, SentryMastraExporter. Before the PR, I will check each one for Node-only code that would break on workerd, and leave out any that has it.

How it works with what is there:

• A user instance wins over the registered default with the same name. Core's filterDuplicateshandles this at init(). The late orchestrion.module-injected handler in baseSdk.ts:158calls addIntegration, which skips a name that is already installed. So a configured instance is not replaced when its module loads later.
• Bundle size: both packages set "sideEffects": false, so a bundle includes only the integrations the user imports.

The trap: these integrations only get data when the @sentry/cloudflare/vite plugin injected the channels. Without the plugin, a configured integration does nothing, with no message. Fix: atinit(), if the user passed a channel integration and GLOBAL_OBJ.__SENTRY_ORCHESTRION__?.bundleris undefined (the plugin did not run), print a debug warning that names the integration and the plugin. A per-module check does not work, because a module can load after init(). Add a doc note too.