[lld] [LLD][ELF] ignore ".so" in search path when relocatable set (PR #94965)

[Reno Dakota via llvm-commits]

================
@@ -49,6 +49,9 @@
 // RUN: ld.lld -o %t3 %t.o -L%t.dir -lls
 // RUN: llvm-readobj --symbols %t3 | FileCheck --check-prefix=DYNAMIC %s
 
+// Should use static when dynamic exists in search path
+// RUN: ld.lld --relocatable -o %t3 %t.o -L%t.dir -lls
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paparodeo wrote:

not sure how use for `llvm-readelf -s`. 

```
llvm-readobj --symbols  test/ELF/Output/libsearch.s.tmp3reloc | FileCheck --check-prefix=STATIC /home/anna/src/llvm-project/lld/test/ELF/libsearch.s
```
seems to work but `llvm-readelf -s` doesn't seem to be compatible with how i'm using FileCheck.

https://github.com/llvm/llvm-project/pull/94965