Fixed svg example

[k4k7us23]

Motivation

Fixes broken example of loading svg using fresco. Fixes https://github.com/facebook/fresco/issues/2820

Test Plan

Vito's java implementation

1. Launch showcase project
2. Open svg screen using sidebar menu
3. Enable toggle "Svg support enable"
4. Press "kill now" in an appeared dialog
5. Open showcase application
6. Make sure fresco's svg logo is displayed

Vito's kotlin implementation

1. Launch showcase project
2. Open settings screen using sidebar menu
3. Enable vito -> "Use kotlin implemention" setting
4. Open svg screen using sidebar menu
5. Enable toggle "Svg support enable"
6. Press "kill now" in an appeared dialog
7. Open showcase application
8. Make sure fresco's svg logo is displayed