fix(ci): remove -derivedDataPath and -clonedSourcePackagesDirPath incompatible with -target

Xcode demands -scheme when using -derivedDataPath or -clonedSourcePackagesDirPath.
Since we use -target TabataGo, these flags must be removed.

Changes:
- Removed -derivedDataPath and -clonedSourcePackagesDirPath from build command
- Moved SWIFT_ENABLE_EXPLICIT_MODULES=NO to its own line for clarity
- Updated Package IPA step to search from repo root (find ..) with explicit
  TabataGo.app name instead of relying on the old derived data path

.gitea/workflows/pr-iphone-deploy.yml

@@ -61,16 +61,16 @@ jobs:
             -destination "generic/platform=iOS" \
             -configuration Debug \
             -allowProvisioningUpdates \
-            -derivedDataPath ../build/derived \
-            -clonedSourcePackagesDirPath ../build/spm-cache \
             -skipPackagePluginValidation \
-            CODE_SIGN_STYLE=Automatic DEVELOPMENT_TEAM=2MJF39L8VY SWIFT_ENABLE_EXPLICIT_MODULES=NO
+            SWIFT_ENABLE_EXPLICIT_MODULES=NO \
+            CODE_SIGN_STYLE=Automatic DEVELOPMENT_TEAM=2MJF39L8VY
 
       - name: Package IPA
         run: |
           cd tabatago-swift
           mkdir -p Payload
-          cp -R "$(find ../build/derived -name '*.app' -type d | head -1)" Payload/
+          APP=$(find .. -name 'TabataGo.app' -type d | grep -v DerivedData | head -1)
+          cp -R "$APP" Payload/
           zip -r build/TabataGo.ipa Payload/
           rm -rf Payload