Find node on m1 via homebrew node managers (#31678)

Summary:
Adds homebrew on m1 to path before evaluating `command -v brew` to support nvm on m1 via homebrew.

## Changelog

[General] [Changed] - Find node on m1 via homebrew node managers

Pull Request resolved: #31678

Test Plan:
On M1, use nvm via homebrew. Create a RN project and it'll fail to build iOS app. Apply the patch, and build will succeed.

cc: dulmandakh as discussed in #31622

Reviewed By: ShikaSD

Differential Revision: D28967386

Pulled By: PeteTheHeat

fbshipit-source-id: 3d4a41dd3cc25fbf77778b16468a236b141d1259

scripts/find-node.sh

@@ -6,6 +6,12 @@
 
 set -e
 
+# Support Homebrew on M1
+HOMEBREW_M1_BIN=/opt/homebrew/bin
+if [[ -d $HOMEBREW_M1_BIN && ! $PATH =~ $HOMEBREW_M1_BIN ]]; then
+  export PATH="$HOMEBREW_M1_BIN:$PATH"
+fi
+
 # Define NVM_DIR and source the nvm.sh setup script
 [ -z "$NVM_DIR" ] && export NVM_DIR="$HOME/.nvm"
 
@@ -31,9 +37,3 @@ if [[ ! -x node && -d ${HOME}/.anyenv/bin ]]; then
     eval "$(anyenv init -)"
   fi
 fi
-
-# Support Homebrew on M1
-HOMEBREW_M1_BIN=/opt/homebrew/bin
-if [[ -d $HOMEBREW_M1_BIN && ! $PATH =~ $HOMEBREW_M1_BIN ]]; then
-  export PATH="$HOMEBREW_M1_BIN:$PATH"
-fi