Fix: popToNamed(...), need to break from the while loop when entry found

[Goddchen]

We found an issue where our complete history stack is always reset when using popToNamed(...). Turns out that the while loop is missing a break when the actual entry has been found the entries following (including the entry itself) the entry have been removed. Because if we do not break here, we continue with the next while loop iteration, won't find the entry, and remove the last entry until no entries are left and we end up with an empty stack.

[codecov]

Codecov Report

Merging #500 (8edecbe) into master (0c653f8) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #500   +/-   ##
=======================================
  Coverage   96.74%   96.74%           
=======================================
  Files          13       13           
  Lines         861      861           
=======================================
  Hits          833      833           
  Misses         28       28           

Impacted Files	Coverage Δ
package/lib/src/beamer_delegate.dart	94.50% <100.00%> (ø)

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[slovnicki]

Hey @Goddchen
Amazing find! Nice, thanks for the PR! 💙