🔥 Downgrade the expected number of plugins to 25

In e-mission@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 ];