Fix to have stable sorting for end cap artifacts (#6589)

* Fix to have stable sorting for end cap artifacts

* Update output

rust/kcl-lib/tests/subtract_cylinder_from_cube/artifact_graph_flowchart.snap.md

@@ -51,31 +51,31 @@ flowchart LR
   4 ---- 13
   4 <--x 14
   5 --- 18
-  5 x--> 20
+  5 x--> 21
   5 --- 25
   5 --- 29
   6 --- 16
-  6 x--> 20
+  6 x--> 21
   6 --- 24
   6 --- 32
   7 --- 15
-  7 x--> 20
+  7 x--> 21
   7 --- 27
   7 --- 31
   8 --- 17
-  8 x--> 20
+  8 x--> 21
   8 --- 26
   8 --- 30
   9 --- 19
-  9 x--> 21
+  9 x--> 20
   9 --- 28
   9 --- 33
   12 --- 15
   12 --- 16
   12 --- 17
   12 --- 18
-  12 --- 20
-  12 --- 22
+  12 --- 21
+  12 --- 23
   12 --- 24
   12 --- 25
   12 --- 26
@@ -85,8 +85,8 @@ flowchart LR
   12 --- 31
   12 --- 32
   13 --- 19
-  13 --- 21
-  13 --- 23
+  13 --- 20
+  13 --- 22
   13 --- 28
   13 --- 33
   27 <--x 15
@@ -103,9 +103,9 @@ flowchart LR
   30 <--x 18
   28 <--x 19
   33 <--x 19
-  24 <--x 22
-  25 <--x 22
-  26 <--x 22
-  27 <--x 22
-  28 <--x 23
+  28 <--x 22
+  24 <--x 23
+  25 <--x 23
+  26 <--x 23
+  27 <--x 23
 ```