Refs #22197

Includes:
  - using stack allocation for tcp server
  - removal of unnecessary mutex
  - unused includes removed

If the source stops sending data then the cancellation
request has to wait until the receive loop completes
before it is checked. Add the check in more places
to improve the responsiveness.

- put each declaration of a variable in a single line
- using const auto  & to get x, y, e, dx
- directly set the size and xerrors in setPointStandardDeviations

Refs #22218

Refs #22197

- shorter tests by using std::vector equality check capacity
- add test for !hasDx capability

Refs #22218

(cherry picked from commit 37621330)

(cherry picked from commit da3f0d8f)

(cherry picked from commit a2fca669)

(cherry picked from commit 08b308ba)

Refs #22218

Refs #22218

(cherry picked from commit 93ca1a13)

(cherry picked from commit 605b76f8)

(cherry picked from commit 7f29fce2)

(cherry picked from commit 225e2bf7)

Refs #22218

Refs #22218

(cherry picked from commit af337868)

(cherry picked from commit 982a1e6f)

- in WorkspaceCreationHelper: do not overload create2DWorkspaceBinned but use new method create2DWorkspaceNonUniformlyBinned

Refs #22218

- documentation modified (description, usage exmple)
- clang
- performance test ConjoinXRunsTest (<6 sec with dx, without dx it would be 0.1 sec faster)
- fix ConjoinXRuns (bracket did not close correcly)
- add unit test without dx values in ConjoinXRuns (all other tests run with dx)

Refs #22218

(cherry picked from commit f5128b18)

(cherry picked from commit f9c7f9e6)

(cherry picked from commit d160131d)

(cherry picked from commit eb6d6c9e)

(cherry picked from commit 61729042)

(cherry picked from commit a9afae48)

(cherry picked from commit de58faaa)

(cherry picked from commit 09f47fc8)

(cherry picked from commit de62116e)

(cherry picked from commit fd6722c0)

(cherry picked from commit f8456b6c)

(cherry picked from commit 9737a3dd)

I could have added something like

    Counts counts{{4, 9, 16}};
    Points points{{0.4, 0.9, 1.1}};
    ws6->setHistogram(3, points, counts);
    for (auto i = 0; i < 5;
         i++) { // modify all 5 spectra in terms of Dx
      ws6->setPointStandardDeviations(i, 3);
      auto dx = Mantid::Kernel::make_cow<HistogramDx>(3, 8.8);
      ws6->setSharedDx(i, dx);
    }

But the current solution seems to be easier since I do not want to check Dx again here; if algorithm executed and did not throw is enough to test (->RunCombinationHelper).

Refs #22218

- now 90 percent of the ConjoinXRunsTest pass

Refs #22218