[backport] Add deprecation warning to Runtime config (#84168)

[devjiwonchoi]

This PR backports #84168

[vercel]

Notifying the following users due to files changed in this PR based on this repo's notify modifiers:

@timneutkens, @ijjk, @shuding, @huozhi:

packages/next/src/server/config.ts

[ijjk]

Failing test suites

Commit: 00ebf1b | About building and testing Next.js

__NEXT_EXPERIMENTAL_PPR=true pnpm test-start test/e2e/app-dir/back-forward-cache/back-forward-cache.test.ts (PPR)

• back/forward cache > React state is preserved when navigating with back/forward buttons (DD)
• back/forward cache > React state is preserved when navigating back/forward with links (DD)
• back/forward cache > React state is preserved when navigating back to a page with different search params than before (DD)
• back/forward cache > bfcache only preserves up to N entries (DD)
• back/forward cache > navigate back and forth repeatedly between the same pages without evicting (DD)

Expand output

● back/forward cache › React state is preserved when navigating with back/forward buttons

next build failed with code/signal 1

  107 |             if (code || signal)
  108 |               reject(
> 109 |                 new Error(
      |                 ^
  110 |                   `next build failed with code/signal ${code || signal}`
  111 |                 )
  112 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:109:17)

● back/forward cache › React state is preserved when navigating back/forward with links

next build failed with code/signal 1

  107 |             if (code || signal)
  108 |               reject(
> 109 |                 new Error(
      |                 ^
  110 |                   `next build failed with code/signal ${code || signal}`
  111 |                 )
  112 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:109:17)

● back/forward cache › React state is preserved when navigating back to a page with different search params than before

next build failed with code/signal 1

  107 |             if (code || signal)
  108 |               reject(
> 109 |                 new Error(
      |                 ^
  110 |                   `next build failed with code/signal ${code || signal}`
  111 |                 )
  112 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:109:17)

● back/forward cache › bfcache only preserves up to N entries

next build failed with code/signal 1

  107 |             if (code || signal)
  108 |               reject(
> 109 |                 new Error(
      |                 ^
  110 |                   `next build failed with code/signal ${code || signal}`
  111 |                 )
  112 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:109:17)

● back/forward cache › navigate back and forth repeatedly between the same pages without evicting

next build failed with code/signal 1

  107 |             if (code || signal)
  108 |               reject(
> 109 |                 new Error(
      |                 ^
  110 |                   `next build failed with code/signal ${code || signal}`
  111 |                 )
  112 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:109:17)