[Bug]: Future flag warning for v7_relativeSplatPath even when it's set

[porluz]

I'm using React Router as a...

library

Reproduction

In version 6.29, even when the future flag v7_relativeSplatPath is set to false, a warning is still logged.

Instead of a falsy check, and undefined check would get rid of the warning when v7_relativeSplatPath is set to false.

Existing check:

  if ((renderFuture == null ? void 0 : renderFuture.v7_relativeSplatPath) === undefined && (!routerFuture || !routerFuture.v7_relativeSplatPath)) {
    logDeprecation("v7_relativeSplatPath", "Relative route resolution within Splat routes is changing in v7", "https://reactrouter.com/v6/upgrading/future#v7_relativesplatpath");
  }

System Info

System:
    OS: macOS 15.2
    CPU: (12) arm64 Apple M2 Max
    Memory: 719.77 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.14.0 - ~/.nvm/versions/node/v20.14.0/bin/node
    npm: 10.7.0 - ~/.nvm/versions/node/v20.14.0/bin/npm
  Browsers:
    Chrome: 133.0.6943.54
    Safari: 18.2

Used Package Manager

npm

Expected Behavior

No future warning is logged when v7_relativeSplatPath is set to false

Actual Behavior

A future warning is logged when v7_relativeSplatPath is set to false