fix: onerror request of event.target should be href rather than src

[WilsonLiu95]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

The url of link should be href rather than src. Although now has fullhref final return.

'var request = event && event.target && event.target.src || fullhref;',

Breaking Changes

Additional Info

[jsf-clabot]

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[alexander-akait]

Why? Can you describe?

[alexander-akait]

Also please accept CLA

[WilsonLiu95]

Why? Can you describe?

This should be get value of link element.

// error
var request = event && event.target && event.target.src || fullhref;,

// recom
var request = event && event.target && event.target.href || fullhref;,