[clang] [clang-tools-extra] [Index] Reflect in SymbolSubKind whether a typedef points to a struct or a class (PR #181967)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-darwin` running on `doug-worker-3` while building `clang-tools-extra,clang` at step 2 "checkout".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/23/builds/18055

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (checkout) failure: update (failure)
...
remote: Counting objects:  83% (117/140)        
remote: Counting objects:  84% (118/140)        
remote: Counting objects:  85% (119/140)        
remote: Counting objects:  86% (121/140)        
remote: Counting objects:  87% (122/140)        
remote: Counting objects:  88% (124/140)        
remote: Counting objects:  89% (125/140)        
remote: Counting objects:  90% (126/140)        
remote: Counting objects:  91% (128/140)        
remote: Counting objects:  92% (129/140)        
remote: Counting objects:  93% (131/140)        
remote: Counting objects:  94% (132/140)        
remote: Counting objects:  95% (133/140)        
remote: Counting objects:  96% (135/140)        
remote: Counting objects:  97% (136/140)        
remote: Counting objects:  98% (138/140)        
remote: Counting objects:  99% (139/140)        
remote: Counting objects: 100% (140/140)        
remote: Counting objects: 100% (140/140), done.        
remote: Compressing objects:   3% (1/26)        
remote: Compressing objects:   7% (2/26)        
remote: Compressing objects:  11% (3/26)        
remote: Compressing objects:  15% (4/26)        
remote: Compressing objects:  19% (5/26)        
remote: Compressing objects:  23% (6/26)        
remote: Compressing objects:  26% (7/26)        
remote: Compressing objects:  30% (8/26)        
remote: Compressing objects:  34% (9/26)        
remote: Compressing objects:  38% (10/26)        
remote: Compressing objects:  42% (11/26)        
remote: Compressing objects:  46% (12/26)        
remote: Compressing objects:  50% (13/26)        
remote: Compressing objects:  53% (14/26)        
remote: Compressing objects:  57% (15/26)        
remote: Compressing objects:  61% (16/26)        
remote: Compressing objects:  65% (17/26)        
remote: Compressing objects:  69% (18/26)        
remote: Compressing objects:  73% (19/26)        
remote: Compressing objects:  76% (20/26)        
remote: Compressing objects:  80% (21/26)        
remote: Compressing objects:  84% (22/26)        
remote: Compressing objects:  88% (23/26)        
remote: Compressing objects:  92% (24/26)        
remote: Compressing objects:  96% (25/26)        
remote: Compressing objects: 100% (26/26)        
remote: Compressing objects: 100% (26/26), done.        
remote: Total 48 (delta 40), reused 27 (delta 22), pack-reused 0 (from 0)        
>From https://github.com/llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
fatal: reference is not a tree: 28d564bcc9e2e12b812e3fd3ff38b85bffec5c91

```

</details>

https://github.com/llvm/llvm-project/pull/181967