55001 FlutterErrorDetails.context docs fix (a: error message, a: tests, cla: yes, d: api docs, d: examples, documentation, framework, waiting for tree to go green)

55829 allow changing the paint offset of a GlowingOverscrollIndicator (a: fidelity, a: quality, cla: yes, d: api docs, d: examples, documentation, f: material design, f: scrolling, framework, severe: new feature, waiting for tree to go green)

57195 Fix NavigationRail class docs (cla: yes, d: api docs, f: material design, framework, waiting for tree to go green)

57838 Add sample code of  GestureDetector with no children (cla: yes, d: api docs, d: examples, documentation, f: gestures, framework, waiting for tree to go green)