Shipbreaking: On Tramstation, the 'clear floor plating' button clears the designated area with asteroid tiles, which is subsequently not considered cleared, softlocking

[Muffindrake]

Round ID:

9001

Testmerges:

#4846: 'Tgui Player & Options panel - Please Review Me' by Veth-s at commit 9fa6a8c3f4
#4937: 'Lead Poisoning Station: A bizarro station for use on monke' by Killermankey at commit f9144aea35
#4995: 'Spess.tv' by Absolucy at commit b216671640
#4997: 'Update Medical cyborgs.' by Gw0sty at commit cbebe281d6
#5002: 'Pipebombs to replace IEDs' by Uristthedorf at commit 1eaca3f0a5
#5019: 'Even more various fixes' by Gw0sty at commit 0579ec7a29
#5016: 'Paramedic Gps' by Gw0sty at commit 25d3c00fd5
#4767: 'Heliostation from fulp' by Shoddd at commit b01880656b
#5017: 'The Derelict / KS13 Engineering Update' by BingusSS13 at commit d52df176e3
#4931: 'Renaming viro subtypes and fixing disease severities and maintence panels (AKA a bunch of fixes for viro at this point.)' by Gw0sty at commit 785e96932a
#4815: 'The shot gun' by HimKobold at commit cbd5a9c158
#3011: 'Brings back NIF hiveminds, this time they are fully functional and not broken' by KnigTheThrasher at commit 66395d8987
#5058: '[DNM] inline some replay marking procs' by Absolucy at commit e5b425ce3d
#5050: 'Adding more tramstation areas/bar touchups' by Gw0sty at commit 6dd74100cd
#5046: 'Moves boxstation's engineering mail destination to the foyer' by Wisemonster at commit 952dcb96d6
#3620: '[DNM] Aneri except I redid the branch again' by Absolucy at commit 8ff74cf431
#5083: '[PORT] Navigate verb now indicates areas above or below you' by Absolucy at commit 7c1da03c7e
#5087: 'Beepsky stuns are now closer to a stunbaton rather than an instant hardstun' by Absolucy at commit bdc09a87a6
#5061: 'Tells you the amount of donator tokens' by Wisemonster at commit cdbc609aca

Reproduction:

Break apart a ship on tramstation, use the clear button, observe that the entire area gets filled with asteroid floor instead of space.
It is now impossible to proceed with breaking another ship because the 'send another' feature recognizes asteroid floor as valid flooring.