BUG: Update ConnectedComponentImageFilter test baselines for deterministic RNG

The previous commit replaced std::uniform_int_distribution with a
direct modulo expression so that std::mt19937 output is reduced
identically across libstdc++ / libc++ / MSVC. Update the four test
baselines to the new deterministic output and drop the per-platform
.1 alternates that existed only to paper over the prior cross-stdlib
divergence.

Three new CIDs land via InsightSoftwareConsortium/ITKTestingData#38:

  Test.png  (also reused by ...TestRGB)
    bafkreibyjpytxv46k6mkxo3sadppjvs6b5vjqwqcz6u4vkzpp2btmge4fm
  Test2.png
    bafkreif6vtfmpapapqk5q5xlitj7g72pdihcrrncdf5cwgtnexu36cj6rm
  Test3.png
    bafkreibxbxqmcg73nig3ncv7gt2rqdcj7nfw72r3be4r6l5llmqw4wpwru

Verified locally on macOS 15 / Apple Clang Release: all four
itkConnectedComponentImageFilterTest{,RGB,2,3} tests pass against
the new primary baselines with no fall-through to alternates.

Author: hjmjohnson

Testing/Data/Baseline/BasicFilters/ConnectedComponentImageFilterTest.1.png.cid

@@ -1 +1 @@
-bafkreidv7hznlkcvddhdi7udpvsvqd7q677dhiamqenhskxyq53vogf62q
+bafkreibyjpytxv46k6mkxo3sadppjvs6b5vjqwqcz6u4vkzpp2btmge4fm

Testing/Data/Baseline/BasicFilters/ConnectedComponentImageFilterTest.png.cid

@@ -1 +1 @@
-bafkreihut6bgxwhnrmts5ov5hr357n4u7m53f2sjquuobazjizetlqb4ky
+bafkreif6vtfmpapapqk5q5xlitj7g72pdihcrrncdf5cwgtnexu36cj6rm

Testing/Data/Baseline/BasicFilters/ConnectedComponentImageFilterTest2.1.png.cid

@@ -1 +1 @@
-bafkreifvvwy6zmh7td3cutymiervm7ipqgkfwx6rxuyxej2acw4i5ebcmu
+bafkreibxbxqmcg73nig3ncv7gt2rqdcj7nfw72r3be4r6l5llmqw4wpwru