KCL parser: Allow .prop or [index] to follow any expression (#7371)

Previously in a member expression like `foo.x` or `foo[3]`, `foo` had to be an identifier. You could not do something like `f().x` (and if you tried, you got a cryptic error). Rather than make the error better, we should just accept any expression to be the LHS of a member expression (aka its 'object').

This does knock our "parse lots of function calls" from 58 to 55 calls before it stack overflows. But I think it's fine, we'll address this in https://github.com/KittyCAD/modeling-app/pull/6226 when I get back to it.

Closes https://github.com/KittyCAD/modeling-app/issues/7273

rust/kcl-lib/tests/kcl_samples/i-beam/artifact_graph_flowchart.snap.md

@@ -177,72 +177,72 @@ flowchart LR
   2 ---- 34
   17 --- 35
   17 x--> 52
-  17 --- 67
-  17 --- 84
+  17 --- 66
+  17 --- 83
   18 --- 36
   18 x--> 52
-  18 --- 58
-  18 --- 75
+  18 --- 54
+  18 --- 71
   19 --- 37
   19 x--> 52
-  19 --- 56
-  19 --- 73
+  19 --- 61
+  19 --- 78
   20 --- 38
   20 x--> 52
-  20 --- 68
-  20 --- 85
+  20 --- 67
+  20 --- 84
   21 --- 39
   21 x--> 52
-  21 --- 63
-  21 --- 80
+  21 --- 57
+  21 --- 74
   22 --- 40
   22 x--> 52
-  22 --- 54
-  22 --- 71
+  22 --- 64
+  22 --- 81
   23 --- 41
   23 x--> 52
-  23 --- 60
-  23 --- 77
+  23 --- 62
+  23 --- 79
   24 --- 42
   24 x--> 52
-  24 --- 57
-  24 --- 74
+  24 --- 68
+  24 --- 85
   25 --- 43
   25 x--> 52
-  25 --- 64
-  25 --- 81
+  25 --- 70
+  25 --- 87
   26 --- 44
   26 x--> 52
-  26 --- 59
-  26 --- 76
+  26 --- 56
+  26 --- 73
   27 --- 45
   27 x--> 52
   27 --- 69
   27 --- 86
   28 --- 46
   28 x--> 52
-  28 --- 66
-  28 --- 83
+  28 --- 65
+  28 --- 82
   29 --- 47
   29 x--> 52
   29 --- 55
   29 --- 72
   30 --- 48
   30 x--> 52
-  30 --- 61
-  30 --- 78
+  30 --- 58
+  30 --- 75
   31 --- 49
   31 x--> 52
-  31 --- 70
-  31 --- 87
+  31 --- 60
+  31 --- 77
   32 --- 50
   32 x--> 52
-  32 --- 65
-  32 --- 82
+  32 --- 63
+  32 --- 80
   33 --- 51
   33 x--> 52
-  33 --- 62
-  33 --- 79
+  33 --- 59
+  33 --- 76
   34 --- 35
   34 --- 36
   34 --- 37
@@ -296,57 +296,57 @@ flowchart LR
   34 --- 85
   34 --- 86
   34 --- 87
-  35 --- 67
-  83 <--x 35
-  35 --- 84
-  36 --- 58
-  74 <--x 36
-  36 --- 75
-  37 --- 56
-  72 <--x 37
-  37 --- 73
-  38 --- 68
-  84 <--x 38
-  38 --- 85
-  39 --- 63
-  79 <--x 39
-  39 --- 80
-  40 --- 54
-  40 --- 71
-  87 <--x 40
-  41 --- 60
-  76 <--x 41
-  41 --- 77
-  42 --- 57
-  73 <--x 42
-  42 --- 74
-  43 --- 64
-  80 <--x 43
-  43 --- 81
-  44 --- 59
-  75 <--x 44
-  44 --- 76
+  35 --- 66
+  82 <--x 35
+  35 --- 83
+  36 --- 54
+  36 --- 71
+  87 <--x 36
+  37 --- 61
+  77 <--x 37
+  37 --- 78
+  38 --- 67
+  83 <--x 38
+  38 --- 84
+  39 --- 57
+  73 <--x 39
+  39 --- 74
+  40 --- 64
+  80 <--x 40
+  40 --- 81
+  41 --- 62
+  78 <--x 41
+  41 --- 79
+  42 --- 68
+  84 <--x 42
+  42 --- 85
+  43 --- 70
+  86 <--x 43
+  43 --- 87
+  44 --- 56
+  72 <--x 44
+  44 --- 73
   45 --- 69
   85 <--x 45
   45 --- 86
-  46 --- 66
-  82 <--x 46
-  46 --- 83
+  46 --- 65
+  81 <--x 46
+  46 --- 82
   47 --- 55
   71 <--x 47
   47 --- 72
-  48 --- 61
-  77 <--x 48
-  48 --- 78
-  49 --- 70
-  86 <--x 49
-  49 --- 87
-  50 --- 65
-  81 <--x 50
-  50 --- 82
-  51 --- 62
-  78 <--x 51
-  51 --- 79
+  48 --- 58
+  74 <--x 48
+  48 --- 75
+  49 --- 60
+  76 <--x 49
+  49 --- 77
+  50 --- 63
+  79 <--x 50
+  50 --- 80
+  51 --- 59
+  75 <--x 51
+  51 --- 76
   54 <--x 53
   55 <--x 53
   56 <--x 53