Close #4550: All tables and figures without `align` option are displayed to center

tests/roots/test-latex-table/expects/longtable.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|l|l|}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|l|l|}
 \hline
 \sphinxstyletheadfamily 
 header1

tests/roots/test-latex-table/expects/longtable_having_caption.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-having-caption}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|l|l|}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|l|l|}
 \sphinxthelongtablecaptionisattop
 \caption{caption for longtable\strut}\label{\detokenize{longtable:id1}}\\*[\sphinxlongtablecapskipadjust]
 \hline

tests/roots/test-latex-table/expects/longtable_having_problematic_cell.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-having-problematic-cell}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|*{2}{\X{1}{2}|}}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|*{2}{\X{1}{2}|}}
 \hline
 \sphinxstyletheadfamily 
 header1

tests/roots/test-latex-table/expects/longtable_having_stub_columns_and_problematic_cell.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-having-both-stub-columns-and-problematic-cell}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|*{3}{\X{1}{3}|}}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|*{3}{\X{1}{3}|}}
 \hline
 \sphinxstyletheadfamily 
 header1

tests/roots/test-latex-table/expects/longtable_having_verbatim.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-having-verbatim}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|*{2}{\X{1}{2}|}}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|*{2}{\X{1}{2}|}}
 \hline
 \sphinxstyletheadfamily 
 header1

tests/roots/test-latex-table/expects/longtable_having_widths.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-having-widths-option}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|\X{30}{100}|\X{70}{100}|}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|\X{30}{100}|\X{70}{100}|}
 \hline\noalign{\phantomsection\label{\detokenize{longtable:namedlongtable}}\label{\detokenize{longtable:mylongtable}}}%
 \sphinxstyletheadfamily 
 header1

tests/roots/test-latex-table/expects/longtable_having_widths_and_problematic_cell.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-having-both-widths-and-problematic-cell}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|\X{30}{100}|\X{70}{100}|}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|\X{30}{100}|\X{70}{100}|}
 \hline
 \sphinxstyletheadfamily 
 header1

tests/roots/test-latex-table/expects/longtable_with_tabularcolumn.tex

@@ -1,6 +1,6 @@
 \label{\detokenize{longtable:longtable-with-tabularcolumn}}
 
-\begin{savenotes}\sphinxatlongtablestart\begin{longtable}{|c|c|}
+\begin{savenotes}\sphinxatlongtablestart\begin{longtable}[c]{|c|c|}
 \hline
 \sphinxstyletheadfamily 
 header1