Disable proxyLoader

[eggplants]

proxyLoadercreatessrc/pages/temp***.js. It causes the following error in my nextjs project on Docker:

ModuleBuildError: Module build failed (from ./node_modules/@sentry/nextjs/cjs/config/loaders/proxyLoader.js):
Error: EROFS: read-only file system, open '/app/src/pages/temp0.5575603336148998.js'
at Object.openSync (node:fs:585:3)
at Object.writeFileSync (node:fs:2170:35)
at Object.proxyLoader (/app/node_modules/@sentry/nextjs/cjs/config/loaders/proxyLoader.js:68:17)

Current only workaround is to set autoInstrumentServerFunctions: false. Is there any other way?

(@sentry/nextjs: 7.15.0, next: 12.3.1)

[AbhiPrasad]

Hey, thanks for writing in! Created an issue so we can triage this bug and fix this: #5944