tests: select: Add test that calc is being dropped in the cascade

test/data/select/tests1.dat

@@ -14652,3 +14652,144 @@ word-spacing: normal
 writing-mode: horizontal-tb
 z-index: auto
 #reset
+
+#tree screen
+| div*
+#ua
+div {
+  width: 123px; width: calc(20px + 2em);
+
+  border-left-width: calc(20px + 2em);
+  bottom: calc(20px + 2em);
+  column-count: calc(1 + 2 + 3);
+  column-gap: calc(20px + 2em);
+  column-width: calc(20px + 2em);
+  flex-basis: calc(20px + 2em);
+  flex-grow: calc(0.9 - 0.5);
+  flex-shrink: calc(2 - 0.5);
+  font-size: calc(2pt + 10vh);
+  height: calc(20px + 2em);
+  letter-spacing: calc(2px + 0.1em);
+  line-height: calc(1em + 10px);
+  margin-left-width: calc(20px + 2em);
+  max-height: calc(20px + 2em);
+  max-width: calc(20px + 2em);
+  min-height: calc(20px + 2em);
+  min-width: calc(20px + 2em);
+  order: calc(1 + 2);
+  orphans: calc(1 + 2);
+  padding-left: calc(20px + 2em);
+  speech-rate: calc(3+5);
+  text-indent: calc(20px + 2em);
+  vertical-align: calc(20px + 2em);
+  volume: calc(0.1 + 0.1);
+  widows: calc(1 + 2);
+  word-spacing: calc(20px + 2em);
+  z-index: calc(1 + 2);
+}
+#errors
+#expected
+align-content: stretch
+align-items: stretch
+align-self: auto
+background-attachment: scroll
+background-color: #00000000
+background-image: none
+background-position: 0% 0%
+background-repeat: repeat
+border-collapse: separate
+border-spacing: 0px 0px
+border-top-color: #ff000000
+border-right-color: #ff000000
+border-bottom-color: #ff000000
+border-left-color: #ff000000
+border-top-style: none
+border-right-style: none
+border-bottom-style: none
+border-left-style: none
+border-top-width: 2px
+border-right-width: 2px
+border-bottom-width: 2px
+border-left-width: 2px
+bottom: auto
+box-sizing: content-box
+break-after: auto
+break-before: auto
+break-inside: auto
+caption-side: top
+clear: none
+clip: auto
+color: #ff000000
+column-count: auto
+column-fill: balance
+column-gap: normal
+column-rule-color: #ff000000
+column-rule-style: none
+column-rule-width: 2px
+column-span: none
+column-width: auto
+content: normal
+counter-increment: none
+counter-reset: none
+cursor: auto
+direction: ltr
+display: inline
+empty-cells: show
+fill-opacity: 1.000
+flex-basis: auto
+flex-direction: row
+flex-grow: 0.000
+flex-shrink: 1.000
+flex-wrap: nowrap
+float: none
+font-family: sans-serif
+font-size: 16px
+font-style: normal
+font-variant: normal
+font-weight: normal
+height: auto
+justify-content: flex-start
+left: auto
+letter-spacing: normal
+line-height: normal
+list-style-image: none
+list-style-position: outside
+list-style-type: disc
+margin-top: 0px
+margin-right: 0px
+margin-bottom: 0px
+margin-left: 0px
+max-height: none
+max-width: none
+min-height: 0px
+min-width: 0px
+opacity: 1.000
+order: 0
+outline-color: invert
+outline-style: none
+outline-width: 2px
+overflow-x: visible
+overflow-y: visible
+padding-top: 0px
+padding-right: 0px
+padding-bottom: 0px
+padding-left: 0px
+position: static
+quotes: none
+right: auto
+stroke-opacity: 1.000
+table-layout: auto
+text-align: default
+text-decoration: none
+text-indent: 0px
+text-transform: none
+top: auto
+unicode-bidi: normal
+vertical-align: baseline
+visibility: visible
+white-space: normal
+width: 123px
+word-spacing: normal
+writing-mode: horizontal-tb
+z-index: auto
+#reset