[libcxx][iterator][nfc] acquires lock for working on [range.iter.ops]

[Mordante]

Wouldn't it be easier to claim these without a review?
The section changes look good to me.

[cjdb]

In D101845#2736627, @Mordante wrote:

Wouldn't it be easier to claim these without a review?
The section changes look good to me.

Putting it up for review gives the listed reviewers time to let the locker know.

[zoecarver]

I'm not sure how I drew the line in the document for when a section should be split up. In retrospect, it seems like I may have made the wrong decision in a few places. Anyway, this LGTM.

libcxx/docs/OneRangesProposalStatus.csv

 bidirectional_iterator: `D100278 <https://llvm.org/D100278>`_",
 [indirectcallable.indirectinvocable],"indirectly_unary_invocable, indirectly_regular_unary_invocable, indirectly_unary_predicate, indirectly_binary_predicate, indirectly_equivalence_relation, and indirectly_strict_weak_order.","[concepts], [readable.traits]: iter_value_t, [iterator.traits]",,,
 [projected],,[iterator.concepts],,,
 [common.alg.req]: pt. 1,"indirectly_movable, indirectly_movable_storable, indirectly_copyable, and indirectly_copyable_storable.",[iterator.concepts],,,
 [common.alg.req]: pt. 2,indirectly_swappable,"[iterator.concepts], [iterator.cust.swap]",,,
 [common.alg.req]: pt. 3,indirectly_comparable,[projected],,,
 [common.alg.req]: pt. 4,"Note: could be done with pt. 1.           …                              permutable, mergeable, and sortable",[iterator.concepts],,,
 [std.iterator.tags],,[iterator.traits],,,
-[range.iterator.operations.advance],ranges::advance,[iterator.concepts],,,
-[range.iterator.operations.distance],ranges::distance,"[iterator.concepts], [range.range]",,,
-[range.iterator.operations.next],ranges::next,[iterator.concepts],,,
-[range.iterator.operations.prev],ranges::prev,[iterator.concepts],,,
+[range.iter.op.advance],ranges::advance,[iterator.concepts],Christopher Di Bella,"`D101922 <https://llvm.org/D101922>`_",
+[range.iter.op.distance],ranges::distance,"[iterator.concepts], [range.range], [range.sized]",Christopher Di Bella,"`D101922 <https://llvm.org/D102789>`_",
+[range.iter.op.next],ranges::next,[iterator.concepts],Christopher Di Bella,"`D102563 <https://llvm.org/D102563>`_",
+[range.iter.op.prev],ranges::prev,[iterator.concepts],Christopher Di Bella,"`D102564 <https://llvm.org/D102564>`_",
 [predef.iterators],Updates to predefined iterators.,"[iterator.concepts], [iterator.cust.swap], [iterator.cust.move]",,,
 [move.sentinel],,[concepts] … Note: for testing it may be beneficial to have completed [predef.iterators]. ,,,
 [common.iterator],,"[iterator.concepts], [iterator.cust.swap], [iterator.cust.move]",,,
 [default.sentinels],The empty std::default_sentinel_t.,,,,
 [counted.iterator],,"[iterator.concepts], [iterator.cust.swap], [iterator.cust.move], [default.sentinels]",,,
 [stream.iterators],,[default.sentinels],,,
 [ranges.syn]: pt. 1,All the stuff not specified elsewhere. ,"[range.access], [iterator.concepts], [range.all], [range.subrange], unreachable, [range.empty]",,,
 [ranges.syn]: pt. 2,"iterator_t, sentinel_t, and safe_iterator_t",[range.access],Christopher Di Bella,"`D100255 <https://llvm.org/D100255>`_, `D100269 <https://llvm.org/D100269>`_",
 [range.access],"ranges::begin, end, cbegin, cend, rbegin, rend, crbegin, and crend",[iterator.concepts],Christopher Di Bella,`D100255 <https://llvm.org/D100255>`_,
 [ranges.primitives],"size, empty, data, and cdata",[iterator.concepts],Zoe Carver,,
 [range.range],,[range.access],,,
-[range.sized],,"[range.primitives], [range.range]",,,
+[range.sized],"ranges::sized_range","[range.primitives], [range.range]",Christopher Di Bella,"`D102434 <https://llvm.org/D102434>`_",
 [range.view],View and enable_view,[range.range],Louis Dionne,https://reviews.llvm.org/D101547,✅
 [range.refinements],"OutputRange, InputRange, ForwardRange, BidirectionalRange, RandomAccessRange, ContiguousRange, CommonRange, ViewableRange","[ranges.syn]: pt. 2, [range.range]",Christopher Di Bella,"input_range: `D100271 <https://llvm.org/D100271>`_
 forward_range: `D100275 <https://llvm.org/D100275>`_
 bidirectional_range: `D100278 <https://llvm.org/D100278>`_",
 [view.interface],[range.utility.helpers] and view_interface,"[ranges.syn]: pt. 2, [range.view], [range.iterator.operations.prev], [range.refinements]",Zoe Carver,`D101737 <https://llvm.org/D101737>`_,
 [range.subrange],,[view.interface],Zoe Carver,`D102006 <https://llvm.org/D102006>`_,
 [range.all],view::all,"[range.subrange], [range.view.ref]",Zoe Carver,`D102028 <https://llvm.org/D102028>`_,
 [range.view.ref],ref-view,[view.interface],Zoe Carver,`D102020 <https://llvm.org/D102020>`_,