Make podio type name calls future string_view proof

[tmadlener]

BEGINRELEASENOTES

• DDDigi: Make the get{Value,}TypeName calls work with the upcoming switch to std::string_view return types in podio.

ENDRELEASENOTES

AIDASoft/podio#402 switches these to constexpr static std::string_views. Since these are viewing string literals string_view::data is guaranteed to be null terminated (in this case). std::string::data is also guaranteed to be null terminated since c++11 (it has to be equivalent to c_str).

[github-actions]

Test Results

       8 files         8 suites   5h 24m 6s ⏱️
   347 tests    347 ✔️ 0 💤 0 ❌
1 369 runs  1 369 ✔️ 0 💤 0 ❌

Results for commit 86c4a27.