adjust issue template

### Ways to reproduce

Activate [origin-tracking](https://clang.llvm.org/docs/MemorySanitizer.html#msan-origins) (more detailed traceback about where the undefined value came from) by appending

```

 -fsanitize-memory-track-origins

```

in the `Makefile` at lines 71 and 72. Note that this may increase runtime heavily.

Using the [scripts](https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/wikis/Software-development/pyivastest-howto#how-to-reproduce-tests):

<!--- check correct sanitizer type -->

<!--- add error pattern if needed -->

```

python3 scripts/IvasBuildAndRunChecks.py --checks CLANG1 -m MODE -p /path/to/my/local/ci_linux_ltv_local.json

```

or directly:

```

make clean

make -j CLANG=1

make -j CLANG=1 MSAN_TRACK_ORIGINS=1

./IVAS_cod ...

networkSimulator_g192 dly_profile.dat bit bit_err trace_dump 1

./IVAS_dec ...