CCloud environment with no clusters expands to show nothing

[shouples]

Type: Bug

Requires a user to have access to a Confluent Cloud environment that doesn't have any Kafka nor Schema Registry clusters

Extension version: 0.15.3 VS Code version: Code 1.93.1 (Universal) (38c31bc77e0dd6ae88a4e9cc93428cc27a56ba40, 2024-09-11T17:20:05.685Z) OS version: Darwin arm64 23.6.0 Modes:

System Info

|Item|Value| |---|---| |CPUs|Apple M3 Pro (12 x 2400)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: enabled_on
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off| |Load (avg)|3, 3, 3| |Memory (System)|36.00GB (0.68GB free)| |Process Argv|--log confluentinc.vscode-confluent=trace --crash-reporter-id d5260215-85f2-445d-a5d1-7e96e09267cc| |Screen Reader|no| |VM|0%|

A/B Experiments

``` vsliv368cf:30146710 vspor879:30202332 vspor708:30202333 vspor363:30204092 vscod805:30301674 binariesv615:30325510 vsaa593:30376534 py29gd2263:31024239 vscaac:30438847 c4g48928:30535728 azure-dev_surveyone:30548225 a9j8j154:30646983 962ge761:30959799 pythongtdpath:30769146 welcomedialogc:30910334 pythonnoceb:30805159 asynctok:30898717 pythonmypyd1:30879173 h48ei257:31000450 pythontbext0:30879054 accentitlementst:30995554 dsvsc016:30899300 dsvsc017:30899301 dsvsc018:30899302 cppperfnew:31000557 dsvsc020:30976470 pythonait:31006305 dsvsc021:30996838 945dj816:31013170 a69g1124:31058053 dvdeprecation:31068756 dwnewjupyter:31046869 impr_priority:31102340 nativerepl2:31139839 refactort:31108082 pythonrstrctxt:31112756 flightc:31134773 wkspc-onlycs-t:31132770 wkspc-ranged-c:31125598 ei213698:31121563 ```