chore(term): add descriptive error on Windows for lack of VT #128

Job	Run time
test (ubuntu-20.04, 5.1)	20s
test (ubuntu-20.04, 5.2)	22s
test (ubuntu-20.04, 5.3)	22s
test (ubuntu-20.04, 5.4)	23s
test (ubuntu-20.04, luajit)	22s
test (ubuntu-20.04, luajit-openresty)	20s
test (macos-13, 5.1)	53s
test (macos-13, 5.2)	50s
test (macos-13, 5.3)	57s
test (macos-13, 5.4)	59s
test (macos-13, luajit)	1m 2s
test (macos-13, luajit-openresty)	50s
test (macos-latest, 5.4)	31s
test (windows-latest, 5.1, msvc)	1m 10s
test (windows-latest, 5.2, msvc)	1m 9s
test (windows-latest, 5.3, msvc)	1m 22s
test (windows-latest, 5.4, msvc)	55s
test (windows-latest, luajit, mingw)	1m 6s
	13m 53s

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