Create Plugin action should default to no sortOrder #385
Description
The sortOrder value for plugins can be used to enforce plugin execution order.
If there is no need for a specific plugin execution order, the value of sortOrder is meaningless.
The correct values of sortOrder for plugins to resolve a problem can only be determined on a case by case basis.
A typical example where a sortOrder is required, is a when two Magento modules are installed together that do not usually go together, and one plugin interferes with the other (maybe an aroundPlugin doesn't always call $proceed, which should also prevent the other plugin from execution).
In such a case one solution is to create a conflict resolution module to set the correct sortOrder on both the plugins through configuration merging.
However, until such time, there is no "correct" value for a plugin sortOrder, since it always has to be in relation to the sortOrder value of one or more other specific plugins.
For this reason, instead of defaulting to a meaningless value of 10 and enforcing the sortOrder value to be set in the "Create Plugin" PHPStorm action, I suggest leaving the input field empty by default and not enforcing it.
When no value is set, the sortOrder attribute should be omitted in the resulting XML.