MapAreaRoute override existing area constraint

[sebastienros]

When using MapAreaRoute with an existing set of constraints containing the area entry, the entry will be overriden by the area name passed as a parameter. I would expect it to be kept in this case.
For example, I want to pass an explicit constraint object for area instead of a string to prevent Regex comparisons on this route.

[iscifoni]

@Eilon This is in up-for-grabs.. I can do it ?

[rynowak]

I'm not @Eilon - but yes!

up-for-grabs means that we're definitely interested in a fix and it's also a good issue for someone unfamiliar with the code to take a crack at. Please do

[iscifoni]

ok Thanks :)

[Eilon]

Yup, go for it!

[Eilon]

@ajaybhargavb assigning this to you to track @iscifoni 's PR at #4954.

[ajaybhargavb]

b4677a4