fix!(connection): Correctly handle multiple highlighted connections (#6416)
fix!(connection): Correctly handle multiple highlighted connections (#6416)

Modify RenderedConnection.prototype.highlight and .unhighlight to
store the highlight path on this rather than as a static property
on Connection (which is where it had been stored since this
functionality was originally created, previously to RenderedConnection
and Connection being split).
rachel-fenichel/blockly,rachel-fenichel/blockly,google/blockly,google/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,google/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,google/blockly,rachel-fenichel/blockly,google/blockly