解码Base64 格式的字符串。
str
{String}
returns
{{ base64_decode str }}
{{ base64_decode 'b25lIHR3byB0aHJlZQ==' }}
'%3e%3crect%20x='6'%20y='7.13049'%20width='13'%20height='10'%20rx='1'%20fill='black'/%3e%3cpath%20d='M12.4998%2012.936L-3.65042%200.604835L28.65%200.604838L12.4998%2012.936Z'%20stroke='white'%20stroke-linejoin='round'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_716_14611'%3e%3crect%20x='6'%20y='7.13049'%20width='13'%20height='10'%20rx='1'%20fill='white'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)
'%3e%3crect%20x='5.63086'%20y='7.26086'%20width='13'%20height='10'%20rx='1'%20fill='white'/%3e%3cpath%20d='M12.1306%2013.0664L-4.01956%200.735206L28.2809%200.735209L12.1306%2013.0664Z'%20stroke='%231A2C42'%20stroke-linejoin='round'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_716_14599'%3e%3crect%20x='5.63086'%20y='7.26086'%20width='13'%20height='10'%20rx='1'%20fill='white'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)