Running netlify dev with the -t flag applies redirection rules to /.netify/functions

[nonAlgebraic]

Describe the bug

When running netlify dev with the -t flag to enable some of the recent changes to the redirection engine locally (e.g. automatic passthrough of query parameters), if there is a redirection rule that matches the /.netlify/functions path it causes calls to Netlify functions to fail. This is different from when running netlify dev without the -t flag, where the /.netlify/functions is never redirected even if there are redirection rules that technically match it. Since it's not possible to override this behavior with a redirection rule that matches /.netlify/* paths, there's no way to make functions work together with broadly applying redirection rules.

To Reproduce

1. Clone this minimal reproduction repo: https://github.com/nonAlgebraic/netlify-cli-functions-redirect-bug-repro
2. Navigate to the cloned repository
3. Run yarn install
4. Run yarn netlify dev -t
5. See that the Netlify function call invoked by the script on the redirected page is itself redirected, causing the script to fail.
6. Run yarn netlify dev (without the -t flag)
7. See that the function call is now successful.

Configuration

netlify.toml:

[dev]
  command = "yarn start"
  framework = "#custom"
  publish = "public"
  targetPort = 8080
  port = 9090

[build]
  functions = "functions"

[[redirects]]
  from = "/*"
  to = "/some-page.html"
  status = 301

Output of envinfo:

System:
  OS: macOS 11.1
  CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
  Memory: 881.86 MB / 16.00 GB
  Shell: 3.2.57 - /bin/bash
Binaries:
  Node: 14.15.0 - ~/.nvm/versions/node/v14.15.0/bin/node
  Yarn: 1.22.10 - ~/projects/netlify-cli-functions-redirect-bug-repro/node_modules/.bin/yarn
  npm: 6.14.8 - ~/.nvm/versions/node/v14.15.0/bin/npm
  Watchman: 4.9.0 - /usr/local/bin/watchman
npmPackages:
  netlify-cli: ^2.70.0 => 2.70.0 

Expected behavior

When running netlify dev -t, either calls to /.netlify/functions do not have redirection rules applied to them, or it is made possible to override the redirection with a suppresive rule such as

[[redirects]]
  from = "/.netlify/*"
  to = "/.netlify/:splat"
  status = 200

placed before the more general rule.

[erezrokah]

Released in https://github.com/netlify/cli/releases/tag/v3.1.0.
Thanks for the report @nonAlgebraic!