QSRV groups aren't created when loaded with `dbLoadGroups` in .cmd file

[ericonr]

Describe the bug

Defining a group in a .json file to be loaded by dbLoadGroups doesn't work.

To Reproduce Steps to reproduce the behavior:

1. unpack the attached tarball
2. run softIocPVX st.cmd
3. run pvxgl in iocsh. Only table-info is listed

The bug doesn't manifest itself if using softIocPVX command line options, though:

1. run softIocPVX -d records.db -G quote.json
2. run pvxgl in iocsh. Now table-info and table-quote are listed

Expected behavior

dbLoadGroup should properly load a group.

Information (please complete the following):

Host: linux-x86_64
Target: linux-x86_64 Linux gcc
Toolchain
    __cplusplus = 201103
    GCC 11.4.0
    _GLIBCXX_USE_CXX11_ABI = 1
    GLIBC 2.35
    __GLIBCXX__ 20230528
Versions
    PVXS 1.3.2 (1.3.2-6-g8bf16de8a222d9d5fca3-dirty)
    EPICS 7.0.8.2-DEV
    libevent 2.1.12-stable
Runtime
    uname() -> Linux S-SWC03-L 6.8.0-45-generic #45~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Sep 11 15:25:05 UTC 2 x86_64
    epicsThreadGetCPUs() -> 8

Additional context:

The docs should include an explanation about the requirement to quote + prefixed mappings.

[ericonr]

qgroup.tar.gz