Remove residual mentions of TrackStorage name in TrackContainerHandle

At some point we decided that TrackStorageContainer is great name for xAOD tracks container. Then it was renamed to TrackSummaryContainer. This MR clears residuals of the old name

@wolter (I belive robot will notify all other.)

This merge request affects 1 package:

• Tracking/Acts/ActsEvent

This merge request affects 3 files:

• Tracking/Acts/ActsEvent/ActsEvent/TrackContainerHandle.h
• Tracking/Acts/ActsEvent/ActsEvent/TrackSummaryContainer.h
• Tracking/Acts/ActsEvent/Root/TrackSummaryContainer.cxx

Adding @jojungge ,@adye ,@pagessin ,@toyamaza ,@tbold ,@cvarni as watchers

added ACTS Tracking main review-pending-level-1 labels

CI Result SUCCESS (hash e7d21c79)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 3911]

The changes are straightforward and there are no issues with the CI. Approving from L1.

added review-approved label and removed review-pending-level-1 label

mentioned in commit b966c967

merged