🔥 Downgrade the expected number of plugins to 25

In e81164c
we removed the email plugin, but we did not adjust the expected number of plugins downward
Finally doing so now

Testing done:

Before this:

```
Found       25 plugins, expected 26
Found       25 plugins, expected 26, retrying
```

After this:

```
Found       25 plugins, expected 25
All plugins installed successfully!
```

setup/setup_shared_native.sh

@@ -23,7 +23,7 @@ sed -i -e "s|/usr/bin/env node|/usr/bin/env node --unhandled-rejections=strict|"
 
 npx cordova prepare
 
-EXPECTED_COUNT=26
+EXPECTED_COUNT=25
 INSTALLED_COUNT=`npx cordova plugin list | wc -l`
 echo "Found $INSTALLED_COUNT plugins, expected $EXPECTED_COUNT"
 if [ $INSTALLED_COUNT -lt $EXPECTED_COUNT ];