Shadowing behavior breaks when request URL has query params

[RaeesBhatti]

- Do you want to request a feature or report a bug?
Bug
- What is the current behavior?
If request URL is /something?ping=pong, netlify dev will look for variants of files name something?ping=pong.

- If the current behavior is a bug, please provide the steps to reproduce.

• Run netlify dev
• Have a file at /something.html
• Visit /something?ping=pong

- What is the expected behavior?

netlify dev ignores query string params when looking for shadowing files

- Local Environment Information

────────────────────┐
 Environment Info   │
────────────────────┘

  System:
    OS: macOS 10.15.5
    CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
  Binaries:
    Node: 12.18.0 - ~/.n/bin/node
    Yarn: 1.17.3 - /usr/local/bin/yarn
    npm: 6.14.4 - ~/.n/bin/npm
  Browsers:
    Chrome: 83.0.4103.97
    Firefox: 76.0
    Safari: 13.1.1
  npmGlobalPackages:
    netlify-cli: 2.53.0

netlify-cli/2.53.0 darwin-x64 node-v12.18.0