[clang] [Basic] Use SmallSet::insert_range (NFC) (PR #133594)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-arm-ubuntu` running on `linaro-lldb-arm-ubuntu` while building `clang` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/18/builds/13707

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

```
Step 6 (test) failure: build (failure)
...
PASS: lldb-unit :: Language/CPlusPlus/./LanguageCPlusPlusTests/1/6 (2153 of 2932)
PASS: lldb-unit :: Language/CPlusPlus/./LanguageCPlusPlusTests/2/6 (2154 of 2932)
PASS: lldb-unit :: Language/CPlusPlus/./LanguageCPlusPlusTests/3/6 (2155 of 2932)
PASS: lldb-unit :: Language/CPlusPlus/./LanguageCPlusPlusTests/4/6 (2156 of 2932)
PASS: lldb-unit :: Language/CPlusPlus/./LanguageCPlusPlusTests/5/6 (2157 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/0/29 (2158 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/1/29 (2159 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/10/29 (2160 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/11/29 (2161 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/12/29 (2162 of 2932)
FAIL: lldb-unit :: Host/./HostTests/33/96 (2163 of 2932)
******************** TEST 'lldb-unit :: Host/./HostTests/33/96' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/tools/lldb/unittests/Host/./HostTests-lldb-unit-1310901-33-96.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=96 GTEST_SHARD_INDEX=33 /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/tools/lldb/unittests/Host/./HostTests
--

Script:
--
/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/tools/lldb/unittests/Host/./HostTests --gtest_filter=MainLoopTest.CallbackWithTimeout
--
../llvm-project/lldb/unittests/Host/MainLoopTest.cpp:227: Failure
Expected: (std::chrono::steady_clock::now() - start) >= (std::chrono::seconds(2)), actual: 8-byte object <91-1A 35-77 00-00 00-00> vs 8-byte object <02-00 00-00 00-00 00-00>


../llvm-project/lldb/unittests/Host/MainLoopTest.cpp:227
Expected: (std::chrono::steady_clock::now() - start) >= (std::chrono::seconds(2)), actual: 8-byte object <91-1A 35-77 00-00 00-00> vs 8-byte object <02-00 00-00 00-00 00-00>



********************
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/13/29 (2164 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/14/29 (2165 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/15/29 (2166 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/16/29 (2167 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/17/29 (2168 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/18/29 (2169 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/19/29 (2170 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/21/29 (2171 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/2/29 (2172 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/20/29 (2173 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/22/29 (2174 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/23/29 (2175 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/24/29 (2176 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/25/29 (2177 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/26/29 (2178 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/27/29 (2179 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/28/29 (2180 of 2932)
PASS: lldb-unit :: Language/Highlighting/./HighlighterTests/3/29 (2181 of 2932)

```

</details>

https://github.com/llvm/llvm-project/pull/133594