[TIMOB-26453] Android: default value of borderWidth of view is not respected, if borderRadius is set (but no borderColor)

[ypbnv]

JIRA: https://jira.appcelerator.org/browse/TIMOB-26453

Description:
Default border width of 1 should be used only if we have a borderColor set.

Test case:
app.js

var win = Titanium.UI.createWindow({
height: Titanium.UI.FILL,
width: Titanium.UI.FILL,
layout: 'vertical',
backgroundColor: '#FFFFFF'
});
 
var view1 = Titanium.UI.createView({
top: 20,
height: 100,
width: 280,
backgroundColor: '#000000'
// No borderRadius
});
view1.add(Titanium.UI.createLabel({
color: '#FF0000',
text: 'Click here to test!'
}));
view1.addEventListener('click', function() {
view1.setBackgroundColor('#00FFFF');
});
 
var view2 = Titanium.UI.createView({
top: 20,
height: 100,
width: 280,
backgroundColor: '#000000',
borderRadius: 5
});
view2.add(Titanium.UI.createLabel({
color: '#FF0000',
text: 'Click here to test!'
}));
view2.addEventListener('click', function() {
view2.setBackgroundColor('#00FFFF');
});
 
win.add(view1);
win.add(view2);
 
win.open();

Before this PR the second view will have a visible border with width of one.

[build]

	Messages
📖	💾 Here's the generated SDK zipfile.

Generated by 🚫 dangerJS

[keerthi1032]

FR Passed. Waiting for CR to merge.

Test Environment:
Name = Mac OS X
Version = 10.13.6
Architecture = 64bit
Memory = 17179869184
Node.js
Node.js Version = 8.12.0
npm Version = 6.4.1
Titanium CLI
CLI Version = 5.1.1
Titanium SDK
SDK Version = local 8.0.0 sdk
Device =Samsung s5 Android 6,Pixel 2 Android 9
Emulator =Nexus Android 4.4, Pixel 2XL android 8

[sgtcoolguy]

LGTM