qmcpack-3.17.1/src/AFQMC/Walkers/WalkerSetBase.h(51): error: incomplete type is not allowed

**Describe the bug**
Cannot compile QMCPACK v3.17.1 using Intel's compiler suite

**To Reproduce**
1. Fetch vanilla version [3.17.1](https://github.com/QMCPACK/qmcpack/archive/refs/tags/v3.17.1.tar.gz)
2. cmake -DQMC_COMPLEX=1 -DBUILD_AFQMC=ON -DCMAKE_C_COMPILER=mpiicc -DCMAKE_CXX_COMPILER=mpiicpc
3. make

**Error message**
```
qmcpack-3.17.1/src/AFQMC/Walkers/WalkerSetBase.h(51): error: incomplete type is not allowed
inline static const TimerNameList_t WalkerSetBaseTimerNames =
^
detected during:
instantiation of class "qmcplusplus::afqmc::WalkerSetBase [with Alloc=qmcplusplus::afqmc::shared_allocator, Ptr=qmcplusplus::afqmc::ComplexType *]" at line 107
instantiation of "qmcplusplus::afqmc::WalkerSetBase::WalkerSetBase(qmcplusplus::afqmc::TaskGroup_ &, xmlNodePtr, qmcplusplus::afqmc::AFQMCInfo &, qmcplusplus::RandomBase &, qmcplusplus::afqmc::WalkerSetBase::Allocator, qmcplusplus::afqmc::WalkerSetBase::BPAllocator) [with Alloc=qmcplusplus::afqmc::shared_allocator, Ptr=qmcplusplus::afqmc::ComplexType *]" at line 47 of
"qmcpack-3.17.1/src/AFQMC/Walkers/SharedWalkerSet.hpp"

qmcpack-3.17.1/src/AFQMC/Walkers/WalkerSetBase.h(51): error: incomplete type is not allowed
inline static const TimerNameList_t WalkerSetBaseTimerNames =
^
detected during:
instantiation of class "qmcplusplus::afqmc::WalkerSetBase [with Alloc=qmcplusplus::afqmc::device_allocator, Ptr=qmcplusplus::afqmc::device_ptr]" at line 107
instantiation of "qmcplusplus::afqmc::WalkerSetBase::WalkerSetBase(qmcplusplus::afqmc::TaskGroup_ &, xmlNodePtr, qmcplusplus::afqmc::AFQMCInfo &, qmcplusplus::RandomBase &, qmcplusplus::afqmc::WalkerSetBase::Allocator, qmcplusplus::afqmc::WalkerSetBase::BPAllocator) [with Alloc=qmcplusplus::afqmc::device_allocator, Ptr=qmcplusplus::afqmc::device_ptr]" at line 48 of
"qmcpack-3.17.1/src/AFQMC/Walkers/SerialWalkerSet.hpp"
```

**System:**
- modules loaded:
GCC = "11.3.0",
GCCcore = "11.3.0",
binutils = ".2.38",
["buildenv-intel"] = "2023a-eb",
["buildtool-easybuild"] = "4.8.0-hpce082752a2",
hpc = ".1.9.5",
imkl = ".2023.1.0",
["imkl-FFTW"] = "2023.1.0",
impi = ".2021.9.0",
intel = "2023a",
["intel-compilers"] = "2023.1.0",
libxml2 = "2.10.4-hpc1",
["netCDF-HDF5"] = "4.9.2-1.12.2-hpc1",
zlib = ".1.2.12",

- other systems where this is reproducible: I managed to reproduce the problem on two HPC clusters.

Reproduce the failure with the provided CMake command and Intel compiler suite. Start at src/AFQMC/Walkers/WalkerSetBase.h:51, then trace the instantiations through SharedWalkerSet.hpp and SerialWalkerSet.hpp. Done means QMCPACK v3.17.1 compiles with BUILD_AFQMC and QMC_COMPLEX enabled on the reported Intel environment.

Written by the indexing model from the issue text.