Add test for block restriciton of indicators

test/tests/adaptivity/block_restriction/test.i

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+[Mesh]
+  [box]
+    type = GeneratedMeshGenerator
+    dim = 3
+    nx = 3
+    ny = 3
+    nz = 3
+    xmin = 0
+    xmax = 1
+    ymin = 0
+    ymax = 1
+    zmin = 0
+    zmax = 1
+  []
+  [box1]
+    type = SubdomainBoundingBoxGenerator
+    input = box
+    block_id = 1
+    bottom_left = '0 0.5 0'
+    top_right = '1 1 1'
+  []
+[]
+
+[Variables]
+  [u]
+  []
+[]
+
+[Kernels]
+  [diff]
+    type = Diffusion
+    variable = u
+  []
+  [source]
+    type = BodyForce
+    variable = u
+    function = '(x-0.5) * (x-0.5) * (x-0.5)'
+  []
+[]
+
+[BCs]
+  [archor_x]
+    type = DirichletBC
+    boundary = 'bottom'
+    variable = u
+    value = 0
+  []
+[]
+
+[Adaptivity]
+  marker = errorfrac
+  max_h_level = 2
+  [Indicators]
+    [error]
+      type = GradientJumpIndicator
+      variable = u
+      block = '0'
+    []
+  []
+  [Markers]
+    [errorfrac]
+      type = ErrorFractionMarker
+      refine = 0.5
+      indicator = error
+      block = '0'
+    []
+  []
+[]
+
+[Executioner]
+  type = Transient
+
+  end_time = 200
+  dt = 100
+
+  solve_type = 'PJFNK'
+
+  nl_abs_tol = 1E-5
+  nl_max_its = 400
+
+  l_tol = 1E-8
+  l_max_its = 200
+[]
+
+[Outputs]
+  exodus = true
+[]

test/tests/adaptivity/block_restriction/tests

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+[Tests]
+  design = 'syntax/Adaptivity/index.md'
+  issues = '#14531'
+  [block]
+    type = Exodiff
+    input = 'test.i'
+    exodiff = 'test_out.e-s002'
+    requirement = 'The system shall be able to use block-restricted indicators for adaptivity.'
+  []
+  [mismatch]
+    type = RunException
+    input = test.i
+    cli_args = 'Adaptivity/Markers/errorfrac/block="0 1"'
+    expect_err = 'The block restriction of the marker is larger than the block restriction of its indicator.'
+    requirement = 'The system shall emit a warning if the block restriction of the marker is larger than that of its indicator.'
+  []
+[]